ITEM NAME:20pcs HSS Router Bits Wood Cutter Milling Fits Dremel Rotary Engraving Tool Product Description Description: Item specifics Size: 20pcs 3mm shank DIY Supplies: Woodworking Model Number: 20pcs Burr Bit Grinder Type: Other Type 1: Free.Model Number: 20pcs Burr Bit Grinder. Type 7: 20pcs Burr Bit Grinder. Type 8: Rotary Burr Rotary Rasp. Type 6: Grinding Rotary Burr File. Type 3: Woodworking End Milling Cutter. Type 5: HSS Rotary Files Set.