---
product_id: 741312222
title: "Wensilon(100 pcs) 1/4\"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts"
brand: "wensilon"
price: "€ 43.19"
currency: EUR
in_stock: true
reviews_count: 8
category: "Wensilon"
url: https://www.desertcart.ie/products/741312222-wensilon-100-pcs-1-4-20-premium-stainless-steel-drop
store_origin: IE
region: Ireland
---

# 100 pcs premium anchors Knurled for solid concrete grip 1/4"-20 thread size Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts

**Brand:** wensilon
**Price:** € 43.19
**Availability:** ✅ In Stock

## Summary

> 🔧 Anchor your projects with confidence — the pro’s choice for concrete fastening!

## Quick Answers

- **What is this?** Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts by wensilon
- **How much does it cost?** € 43.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/741312222-wensilon-100-pcs-1-4-20-premium-stainless-steel-drop)

## Best For

- wensilon enthusiasts

## Why This Product

- Trusted wensilon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Fit & Hold:** Designed with a 1/4"-20 thread and 3/8" hole diameter for a rock-solid, professional-grade installation.
- • **Bulk Ready for Any Project:** 100 premium stainless steel anchors to power through all your concrete mounting needs.
- • **Easy Pro-Level Installation:** Simple 3-step setup with standard tools—pre-drill, insert, and set with a hammer for a secure hold.
- • **Corrosion-Resistant Durability:** Crafted from stainless steel to resist rust and corrosion, ensuring long-lasting strength.
- • **Knurled Design for Maximum Grip:** Internal forced expansion anchors embed firmly in solid concrete for unmatched stability.

## Overview

Wensilon’s 100-piece 1/4"-20 stainless steel drop-in anchors offer a durable, corrosion-resistant solution engineered for solid concrete. Featuring a knurled design for superior grip and a precise fit for 3/8" holes, these anchors provide reliable, professional-grade fastening ideal for a wide range of industrial and DIY applications.

## Description

Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts: desertcart.com: Industrial & Scientific

Review: Worked fine and more affordable than Home Depot or Lowes! - I don't have the infrastructure or need to test the actual strength of these anchors, but they seem identical to my Home Depot-sourced other ones, and were substantially cheaper. They dropped into holes in concrete just fine and took a set, letting me mount a hose spool, just like I needed, so there's not much else to say beyond they were functionally fine. I'm not going to use them to install a vehicle lift or life-saving equipment, but then again I'd let someone with an insurance policy do that, so if something goes wrong my widow would have some recourse. Installation is typical of drop in anchors; one needs a hammer drill and masonry bit but it's straightforward.
Review: Good product, easy to use. - These work very well in concrete and stucco. They are a great value. If you were to buy they at the big box stores, you would pay three times the price. I use these for all kinds of projects. My latest use was to mount a retractable hose reel to my house. You do need masonry drill bits to drill the holes to put these into. Also, it would be nice to have a hammer drill to speed up the process.

## Features

- [Package Include]: In this package, you can get 100pcs 1/4"-20 premium stainless steel concrete knurled drop in anchors, sufficient quantity can fully meet your different needs.
- [RELIABLE AND DURABLE]:Our knurled drop-in-anchor are made of high quality stainless steel, which is corrosion and rust resistant, making this drop in anchors more durable. Stainless steel material is strong and powerful, can be fixed on concrete very firmly.
- [Function] 1/4" Inch premium stainless steel material knurled drop in anchors: 1" hole depth and 3/8" hole diameter, use with 1/4-20 bolt.
- [Common Use]: The knurled drop in anchors are greatly ideal for solid concrete, can be used for anchoring into solid concrete. They are commonly used with machine screws, bolts and threaded rod to anchor fixtures to concrete and other masonry materials.
- [Installation Steps]: First, you need to pre-drill a hole; second, install crimped knurled side down in a pre-drilled hole; third, need the set tool, insert the thinner part of the tool into the anchor and the back is struck with a hammer to make sure anchor are properly secured, which can cause the anchor to expand and embed itself in the concrete for a tight fit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D1TH2HD2 |
| Best Sellers Rank | #6,904 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Drop-In Anchors |
| Compatible groove diameter | 0.38 Inches |
| Date First Available | April 16, 2024 |
| Finish Type | Stainless Steel |
| Head Style | Knurled |
| Item Diameter | 37.5 Hundredths-Inches |
| Item Weight | 1.43 pounds |
| Manufacturer | Wensilon |
| Number of Items | 100 |
| Number of Pieces | 100 |
| Shape | Round |
| Thread Size | 1/4-20 |

## Product Details

- **Brand:** Wensilon
- **Color:** SS
- **Fastener Type:** Drop In
- **Material:** Stainless Steel
- **Size:** 1/4"-20

## Images

![Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 1](https://m.media-amazon.com/images/I/319S-DkzQVL.jpg)
![Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 2](https://m.media-amazon.com/images/I/41LJl0qeL-L.jpg)
![Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 3](https://m.media-amazon.com/images/I/41Zt6m9yAvL.jpg)
![Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 4](https://m.media-amazon.com/images/I/41kL18bQhHL.jpg)
![Wensilon(100 pcs) 1/4"-20 Premium Stainless Steel Drop in Anchors Assortment, Knurled Drop-in-Anchor for Solid Concrete, Internal Forced Expansion Screw Bolts - Image 5](https://m.media-amazon.com/images/I/41qSGWeWCEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked fine and more affordable than Home Depot or Lowes!
*by J***E on December 29, 2025*

I don't have the infrastructure or need to test the actual strength of these anchors, but they seem identical to my Home Depot-sourced other ones, and were substantially cheaper. They dropped into holes in concrete just fine and took a set, letting me mount a hose spool, just like I needed, so there's not much else to say beyond they were functionally fine. I'm not going to use them to install a vehicle lift or life-saving equipment, but then again I'd let someone with an insurance policy do that, so if something goes wrong my widow would have some recourse. Installation is typical of drop in anchors; one needs a hammer drill and masonry bit but it's straightforward.

### ⭐⭐⭐⭐⭐ Good product, easy to use.
*by G***E on July 11, 2025*

These work very well in concrete and stucco. They are a great value. If you were to buy they at the big box stores, you would pay three times the price. I use these for all kinds of projects. My latest use was to mount a retractable hose reel to my house. You do need masonry drill bits to drill the holes to put these into. Also, it would be nice to have a hammer drill to speed up the process.

### ⭐⭐⭐⭐ Well made, undersize for 1/2 inch drill / use 12mm bit.
*by B***E on December 24, 2025*

UPDATE: I ordered a 12mm SDS plus masonry bit and tried that. It works perfectly. So it appears that these are 12mm anchors, not 1/2 inch. The vendor needs to update their description. As other's have pointed out, these are undersized for a 1/2" (12.7 mm) hole. They do drop in easily though...too easily. The quality appears to be quite good. But the functionality leaves a lot to be desired. I've tried a few different methods of setting these in a 1/2" hole with a standard anchor punch as well as a long pin punch. 1) Drilling a deeper pilot hole with a 3/8" bit before drilling the actual 1/2" hole to depth, so the slug can be driven deeper to expand it more. That didn't work. 2) Used a couple of lock washers under the anchor as spacers before attempting to set it. That didn't work either. 3) Drilling a 7/16" hole instead of 1/2". That's too tight, the anchor won't go in. 4) Cleaning the 1/2" hole thoroughly with compressed air and a vacuum cleaner. Then coating the anchor in a 2 part epoxy and putting some additional epoxy down the hole. Drop the anchor in, set it and wait 24 hours. That's has worked about 75% of the time. I am going to try metal thread repair mesh for wood screws next. I'm also ordering a 15/32" (12mm) masonry bit to see if that will allow it to drop (or be tapped in) and set with a punch. So these get three stars because they're well made, the slug doesn't fall out in shipment or storage (I've had that happen with other brands) and the threads are good. But unless you plan on using construction adhesive or epoxy to set these, you may want to find another brand. I will update this review after trying them with a 15/32" bit.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ie/products/741312222-wensilon-100-pcs-1-4-20-premium-stainless-steel-drop](https://www.desertcart.ie/products/741312222-wensilon-100-pcs-1-4-20-premium-stainless-steel-drop)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-25*