4pc Brass Collet Set Including 1/32" 1/16" 3/32" 1/8" Fits Dremel Rotary Tools Range of sizes accept bits with 1/8" & 3/32" shanks plus micro-size drill bits, wires, etc. to 0.0mm Machined solid brass provides superior conformity to bit/accessory shank 4.0mm outside-diameter shaft 4pc quality brass collets to fit Dremel, other rotary tools, pin vises Including: 4 pieces