Item specifics Size: 20pcs 3mm shank DIY Supplies: Woodworking Model Number: 20pcs Burr Bit Grinder Type: Other Type 1: The First Six Zone Type 2: Engraving Tool Type 3: Woodworking End Milling Cutter Type 4: Fraise Carbure Type 5: HSS Rotary Files Set Type 6: Grinding Rotary Burr File Type 7: 20pcs Burr Bit Grinder Type 8: Rotary Burr Rotary Rasp Type 9: For Rotary Tool Type 10: Micro Repair Tools Name:20pcs HSS Routing Wood Rotary Milling Cutter Tool Set Material: HSS Specifications: For the rotary tool set burrs higher quality 20 installed Shank: 3mm Uses: 1.Micro-drilling or cutting portion provided in various forms 2.Length of the material efficiently handle around 39mm 3.20PC set of Grinding Routing Bits Including Mandrel. 4.All with fitted 3mm diameter mandrels will fit most rotary tools. 5.These 20 HSS Routing Bits are perfect for all sorts off jobs like Model making and the like. 6.Great for craft, airfix modelling, home, repairs etc you name it. 20PCS-speed steel and wood cutter