Featuring a sleek and compact design, this collet chuck set is good for delicate crafting and repair work. The copper core ensures stable and accurate operation, while the mechanism provides a firm grip on attachments. Whether used for woodworking, metalworking, or DIY projects, it delivers consistent results and enhances user control. 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 -Precision grinding efficiency: the copper core design enhances stability, enabling precise grinding and polishing for intricate and detailed projects -Secure nut: the reinforced nut structure ensures firm clamping, reducing the risk of accidents and improving overall operational safety -Wide range of applications: good for tasks like wood , metal polishing, and crafting, this versatile set supports both professional and hobbyist needs -Sturdy and reliable: constructed from good and practical materials, this collet chuck set offers exceptional durability for longterm use in demanding environments -Easy-to-use accessory kit: simple installation and compatibility with various rotary make this set an for users of all skill levels Package list: 22 Cores 4 x Nuts 2 x Chuck Heads 4 x Wrenches