Product name: Quick replacement drill bit chuck kit, 1/32 "to 1/8" brass quick rotation drill nut, keyless drill bit chuck handle rotation toolProduct Material: Brass chuck, solid alloy material, sturdy . The built-in spring structure of the three jaw chuck is stable, and the keyless drill bit chuck is safer to fix these small drill bits.Eight sizes of brass chucks are available for selection. Convenient for your use: 0.8mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.4mm, 3.0mm, 3.2mm.Easy to use: The chuck can accommodate various accessories with 1/32 "to 1/8" handles. The brass chuck can securely secure the drill bit and easily replace damaged rotating tool accessories.Application: Compatible with all Dremel rotary tools and Dremel flexible shafts (excluding discontinued 1-series, 260, 270, and other models).