

🎲 Roll smarter, play harder — double dice, double the edge!
The Mailbox Books KOP12622 Koplow Games 20-Sided Double Dice set includes six transparent 24mm d20 dice, each featuring a mini 20-sided die inside. Designed for ages 3 and up, these dice generate numbers up to 400, making them perfect for practicing multiplication and enhancing tabletop RPG gameplay with advantage and disadvantage rolls.
| ASIN | B001B02BR8 |
| Age Range Description | 36 months to 1200 months |
| Best Sellers Rank | #208,431 in Toys & Games ( See Top 100 in Toys & Games ) #666 in Role Playing Dice |
| Brand Name | Koplow Games |
| Color | Tan |
| Customer Reviews | 4.4 out of 5 stars 148 Reviews |
| Global Trade Identification Number | 00018183126226 |
| Included Components | Twenty Sided Double Dice(6) |
| Item Dimensions | 5.12 x 3.86 x 1.02 inches |
| Item Dimensions L x W | 5.12"L x 3.86"W |
| Item Shape | Icosahedron |
| Item Type Name | Dice Game Set |
| Item Weight | 0.06 Pounds |
| Manufacturer | SPIG **Do NOT activate** |
| Manufacturer Maximum Age (MONTHS) | 1200.0 |
| Manufacturer Minimum Age (MONTHS) | 36.0 |
| Manufacturer Warranty Description | No Warranty |
| Number of Pieces | 18 |
| Size | 24 mm |
| Theme | Number |
| UPC | 018183126226 |
| Unit Count | 1.0 Count |
E**M
The advantage dice you need
A great product and a great item for any table. The double d20 dice. While not always easy to read. It gives better fun rolls on advantage and disadvantage rolls. So it's very recommended for any ttrpg enthusiasts that use a d20 system like D&D
J**K
Roll With Advantage!
Great option for rolling with advantage or disadvantage. Can also be a novelty item for the gamer in your life!
A**R
Fun present
I gave these out as a gift for our group. A but hard to read the inside die but fun to use.
K**N
Love these, although FYI the outer dice are spin-downs, not standard
So fun and funny! My friends and I all love them. The only thing I'd change would be the outer dice being spin-down, which I didn't know when I bought them. I'd much prefer a standard D20 for both.
B**T
Fun dice to use for D&D.
They are fun to use, could be better quality, but great for the price
D**N
Great Double Dice for the price.
Getting six of these double dice which I like to refer to as D&D 5E's "Advantage Dice" for this price is a steal. Koplow makes great products.
J**D
Cool die in die action (just don't throw it tooooooo hard)
They work well and are very cute, but one of them broke on their first roll. Thankfully there's another tiny d20 inside the outer broken shell so it's not a complete loss. Probably would not encounter this problem in a dice tray (especially a felt lined one) but our rogue chucked it straight against the hard table a bit more directly than that. Rogues, man. T.T color variety is good with 3 clear and 3 colored shells and the dice inside contrast. They are a little lightweight. Everyone really enjoyed them so the value was there for me. Even with the one outer shell cracking. I think our rogue has adopted the tiny inner die. :p
V**1
Teach kids about probability
We used this for years to teach our kids about probability. Very durable and lots of fun for the kids. Highly recommend.
Trustpilot
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