The COL 5C RND(MM) 21.0 Import by Field Tool Supply is a high-precision collet designed for use with 5C collet systems. With a 21.0 mm diameter, it provides a secure grip on round workpieces, ensuring stability during machining. Constructed from durable materials, this collet is built to withstand the rigors of industrial use. Its quick-change design allows for efficient tool changes, making it an essential component for any machining setup. Compatible with a range of lathes and milling machines, it enhances versatility in your operations.