Drill Bit Collet 5 Types Set 3.17mm
Compatible with most rotary tools used in hardware, hobby, and home projects. Suitable for installation with drill bits of inside diameter less than 3.0mm. Can be used with electric grinding tools, hanging mills, hoses, etc. Ideal for working with materials such as sheet iron, aluminum, copper, plastic, and more. Comes with 5 different sizes to meet your needs.