TEXALAN Class ZZ Steel Pin Gage Set Minus (250PCS (0.251-0.500) M2)

Only started to use the pin gages to measure diameter of bored holes. Measuring pin gages with a caliper, the gages Ive used appear to be right on in diameter.

i load my own ammunition for a variety of revolvers, each with potentially different chamber mouth diameters, forcing cone diameters and barrel groove diameters. trying to measure the internal diameter of cylindrical holes to the thousandth (0.001) to determine the correct bullet size for a particular revolver is problematic with a 0.001 dial caliper. these minus size pin gauges are perfect for this purpose. they also will easily identify if the chamber mouths are the same diameter as the others in a particular cylinder, and if undersize, what size reamer is necessary. ive already learned more about my firearms. if you reload or do light gunsmithing, you will find these worth the price. randomly measuring five gauges with a micrometer reveals them to conform to the specification of zz minus.

Very nice set for the price. Sizes are dead on. I am ordering a set in smaller size.

gauge pins made nice. only thing im not happy with is the corner radius is big.

Ive been using this brand for years now. I used them in the last machine shop I worked in, I changed jobs and now have to buy my own tools. Knowing how perfect these were I had no worries with making the purchase. I wish they came with the go, no go holder. I purchased that separately for around $15 and it fits in the case.

The plastic case is made out of crappy plastic however the pin gauges seem to be very accurate

Pin tolerance measure mostly -.00020, some -.00030.

Solid kit.

Love them, Can I buy replacement pins for this?

Well packaged, easy to access the pins and all the pins I have measured have been spot on size wise. Excellent value.