Designed for adaptability, this collet chuck set supports a wide range of electric grinding and rotary tool applications. Its user-friendly assembly process allows for quick changing between accessories, making it suitable for tasks requiring precision and versatility. The sturdy materials ensure performance, even under frequent use. Features -Color:Assorted Color -Material:Copper -Size:2.30X1.40X1.40cm/0.90X0.55X0.55in -Size:5.50X2.00X0.10cm/2.16X0.79X0.04in -Size:1.60X1.10X1.00cm/0.63X0.43X0.39in -Size:1.70X0.60X0.60cm/0.67X0.24X0.24in -Optimized clamping stability: the precision copper core ensures secure and stable clamping, delivering consistent grinding results for good finishes -Safety oriented designed: the sturdy locking nut structure prevents workpiece movement, enhancing safety and reliability during intensive grinding tasks -Adaptable for multiple uses: suitable for wood , metal polishing, and other grinding applications, this set is a versatile addition to any toolkit -Robust build: made from tough, wear-resistant materials, this collet chuck set is designed to endure heavy use without compromising performance -Convenient and versatile: compatible with a wide range of rotary , this accessory kit is easy to use and ideal for both professionals and diy enthusiasts Package list: 22 Cores 4 x Nuts 2 x Chuck Heads 4 x Wrenches