Features 1.This product is required to be used on a flexible shaft with a detachable handle such as a hanging mill, a table mill, a drill shaft or a table saw. It cannot be used alone. 2.The handpiece chuck is made of stainless steel,durable and has long service life. 3.Good heat dissipation ability makes you can use it longer at a time. 4.The handle is stable and has great performance while using. 5.Professional and practical design with beautiful appearance, easy to carry and use. Specification Features: This product is required to be used on a flexible shaft with a detachable handle such as a hanging mill, a table mill, a drill shaft or a table saw. It cannot be used alone. The handpiece chuck is made of stainless steel,durable and has long service life. Good heat dissipation ability makes you can use it longer at a time. The handle is stable and has great performance while using. Professional and practical design with beautiful appearance, easy to carry and use. Specification: Size:0.3~4mm/0.01~0.16in Material:Stainless Steel Package List: 1*Handle 1*Key Note: Due to the high speed operation, the bearing heats up and the handle heats up. After using for 10 minutes, it must be stopped for 2-3 minutes to cool down to avoid overheating of the product, and then use it after the machine has cooled down completely. Package List