Thread Checker, Nut and Bolt Thread Checker, Bolt Size and Thread Gauge, 44 Individual Bolt and Nut Identifier Gauge (23 Standard & 21 Metric) Especially for Size Check in Tight Spaces

Amazing product. Makes identifying thread size a breeze. Especially when you cant remove the bolt you are trying to size. Much more convenient than a wall mounted thread sizer and its offered at an unbeatable price point. You wont be disappointed if you're in need of a thread identifier! My long term concern would be durability as the thread identifiers are milled from lightweight aluminum and depending on the material of the item you're checking you run the risk of cross threading or damaging the threads. Overall, great product, highly recommend!

Works great. I have an old French sailboat, over the years previous owners have used whatever hardware was handy. I have already saved myself numerous trips to the hardware store. It is easy to use, comes in a convenient case, good quality product

Comfylichi 50 Pcs Nut and Bolt thread checker - Good set of thread checking tools for very little money. I went with the individual pieces over the type mounted on a board. Figured it might be easier. Not sure. As you see from the pictures, these are resting in a well marked foam insert in a very flimsy case. Probably the cheapest case I have ever gotten from an Amazon purchase, and that's why it got a 4 star review. The thread checkers are made from aluminum, anodized and screen printed with the size of the threads. They seem to be well made and certainly inexpensive given the price. Good spread of sizes as well including many on the smaller size. I work on electronics a lot and this will come in handy!

Exactly as described. Seems to be good quality product. I just received it and I have already used it to identify some bolts and nuts. Good product at a good price.

So far its great, used a few times. Very handy for my work. I originally purchased on a cable type which didnt allow me to get into tight spaces with all that dangling around. Also harder to search for sizes, but this makes it easy to grab the correct size fast. My one complaint is the tab slide closeur on box is cheap, the right one fell off at first use. Besides that its a good tool to have around.

Works as it should, well marked, and a lot of pieces to choose from. I do have to agree with others on the case it's kinda crappy but I didn't buy it for the case.

The thread checkers themselves are nice. Not bad for aluminum. It is nice that they are anodized in dufferent colors for metric and standard. I do think stainless/black stainless would be better. The sizes are marked well on the checker itself, the foam box insert, as well as being listed on the inside of the box lid. The sizes are etched through the anodizing and show up really well. Even the little tiny ones are very easy to read (see picture) I have already gone though a couple containers of my nut and bolt collections and found that I had misidentified a bunch of them and had metrics in the standard containers, and visa-versa. It is nice to have them being independent rather than on a chain or cable. However, some are really small, so you really have to keep track of them. The larger sizes are hollow on the male end and have extruded threads. They can easily be mistaken as pipe fittings. ;) I really like the foam insert. It us a very dense foam and holds the pieces firmly. The storage box itself is really cheesy. The sliders that lock the box closed fall off. They are ok with the box locked, but keep track of them when it's open. I accidentally knocked one of them off of my work table and spent nearly an hour looking for it. (See red clips in photos) All in all, it is a pretty good value for the price I paid. I got them really cheap (like 45% off) on a Black Friday sale. I would buy them again, but not at full price.

Prefect set, good quality.

A bit expensive but correct and does its job Nice set

Perfect, Some presonne said not strong but this is to find the right tread this is not a tool no more question about the right size

Satisfait

This is such a handy kit to have around the workshop. It’s nicely colour coded and printed. The price is great and compared to the plastic gauges so much more convenient. Will likely buy another.

The are exactly what you need to check thread size nut and bolt.