TEXALAN(R) Steel Pin Gage Set Minus Heat Treated with Storage Case M0 50pcs 0.011"-0.060"

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. i've 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.

I used this to determine the size of a hole for a camshaft dowel pin, and then pressed the next size bigger pin into the camshaft instead of buying a custom dowel pin from a machine shop. The pins seem plenty hard and accurate as well. Good value.

Great Value for the price. Perfect for hobbyist.

Nice range of pins. Seem to be pretty close tolerance wise.

Nice box, accurate pins.

I've 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.

Upon receiving I immediately took a Mitutoyo micrometer to the 0.250", 0.187" and 0.125" pins and all were exactly to size minus 0.00015".Very impressed, great value

Pin tolerance measure mostly -.00020, some -.00030.Chamfer varies between pins from strait edge to round.Works for personal set.