Features FAST CHIP CUTTING This kit really achieves a good finish, comfortable to use, fast chip cutting, high hardness, good build quality without clogging and improved productivity. Easy to Use This kit is easy to grip and easy to use, just operate in the normal process to achieve good results, it is also very friendly for beginners. Applicable scenarios Mainly used for slotting and external polishing of narrow and deep metal materials such as copper, iron, aluminum, alloys, etc. under medium hard. It can also be used for milling processing plastic, wood and other non-metallic materials. Reduce Physical Labor This kit greatly reduces the force of heavy physical work, lowers production costs and allows users to work more powerfully in a more relaxed mode. SAFE AND RELIABLE This set takes into account the operator's own safety and uses hard tungsten steel material, which is stable and not easy to make mistakes, allowing the operator to provide more safety of their own safety. Specification: Item Type:Carbide Rotary File Bit Set Material: tungsten steel. Usage: suitable for wood carving, root carving, olive seeds, sharp blade, durable Shaft diameter: approx. 1/4" Package list: 1 x 1/2 x 1 inch cylindrical bit. 1 x 3/8 x 3/4 inch cylindrical bit 1 x 3/8 x 3/4 Inch Cylindrical Radius End Drill 1 x 1/4 x 5/8 Inch Cylindrical Radius End Drill 1 x 1/4 inch ball drill. 1 x 3/8" Ball Drill 1 x 3/8 x 3/4 inch tree radius end piece 1 x 1/2 x 1 inch tree radius finial. 1 x storage box. Package List 1 x 1/2 x 1in Cylindrical Bit 1 x 3/8 x 3/4in Cylindrical Bit 1 x 3/8 x 3/4in Cylindrical Radius End Bit 1 x 1/4 x 5/8in Cylindrical Radius End Bit 1 x 1/4in Spherical Bit 1 x 3/8in Spherical Bit 1 x 3/8 x 3/4in Tree Radius End Bit 1 x 1/2 x 1in Tree Radius End Bit 1 x Storage Box