10 Pcs .50mm Tungsten Micro Drill Bits Japanese made for CNC PCB Dremel Installation, Toy Making, Model Cars Trucks Planes Boats, Arts & Crafts, Woodworking more... 1/8" 3.175mm shank Shipped in protective plastic case Japanese made tungsten carbide bits Multi-use: CNC, PCB, Jewelry, Toy Making, Installation.... Available in mixed packs and 3D nozzle clog cleaner packs