Metric Screw Thread Identifier - Plastic

The gauge is small, made of plastic and will easily slip into most any tool box. I don't know how durable it will be, especially after running a few hundred bolts through the holes. But, it's cheap enough to buy a new one every couple of years if necessary.I also have the  Thread Detective Screw Gauge, Metric  for use in the shop. It's much more durable and much larger and heavier, not really practical for carrying around in a toolbox like this card is.I like having both.

I have had a hard time finding a metric thread gage, and was pleased to find this one. It is just what it claims to be. I'm not sure how durable it will be, being plastic, but it has worked perfectly so far. When you need to identify size and pitch of a metric bolt, this is essential. I do wish someone made a metal one, like they do for SAE bolts, but since that's not available, this is the next best thing.

This thing saved me and let’s me easily identified threads and bolt sizes.

I liked everything about this...right up until it was delivered. FYI, it's made completely of plastic. When I unwrapped it, I thought that plastic threads and metal threads would be a bad combination. Still, I was cautiously pessimistic, and tried it anyways. Unfortunately, the second screw I tried to identify the thread pitch on, stripped the flimsy plastic threads on the identifier. Seems the metal threads on the screw had cut the plastic threads on the Identifier (and much too easily in my opinion).I know now that I should never have bought it, as it was entirely foreseeable and a reasonable assumption that the plastic threads would strip easily when cut with metal screw threads. I give it 1 star for a cool idea, and take off 4 stars for...what the heck were they thinking making it out of plastic? I suggest that this has a market if it were made out of steel. As a tool, it fails in it's current configuration.

As described, but it is plastic so easy to misthread and it does not have all the small size and pitch combinations I wished for. Bottom line is that it is as described and does work

I was disappointed that the threads were rough and had plastic tailings still in the threads. I then remembered a machinist telling me 40 years ago how difficult working with Teflon and plastics were, so I guess this is the norm. It is usable but not what I thought I was getting.

Just wish it went up to 17 mm.

have to be careful it's plastic