Description: 【Product Application】: This Drill Chuck Collet Set is suitable for electric grinder chucks, making it a versatile addition to your tool kit. 【Material】: This Chuck Collet Kit is made of copper material, which is durable. 【Product size】: The package contains 2 silver nuts, 1 British standard 4486 chuck, 10 4.3tail copper cores, a nut wrench, and an L shaped hexagonal screwdriver. 【Package Details】: The Keyless Bit Chuck Shank Rotary Tool comes in a complete set, ensuring you have all the components you need for your electric grinder chuck. 【VERSATILITY】: With its comprehensive components including silver nuts, British standard chucks, and more, this kit provides versatility for a variety of grinding tasks. Package Includes: 2 pieces silver nuts 1 piece 4486 chuck 10 pieces 4.3 tail copper sandwich cores 1 piece nut wrench 1 piece L shaped hexagonal driver Note: Please allow slightly errors due to manual measurement and different monitors.