50pc Tungsten Carbide Micro Drill Bits Set Drill Press Dremel Pin-Vise 10 each .2mm .3mm .4mm .5mm .6mm 1/8" Shank 3.175mm TOY JEWELRY MAKING, Crafts, CNC, PCB, Woodworking, MODEL TRAINS CARS BOATS!! 1/8" 3.175mm shank Shipped in protective plastic case Japanese made tungsten carbide bits Multi-use: CNC, PCB, Jewelry, Toy Making, Installation.... Other sizes available