Quick-change keyless chucks hold various accessories with shank sizes from 1/32 inch to 1/8 inch. One-piece structure design, made of alloy material, sturdy and durable, safer than plastic models. The 3-jaw chuck is well-made, and the built-in spring is stable and durable. Includes eight brass collet sizes: 0.8 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm, 2.4 mm, 3.0 mm, and 3.2 mm. Compatible with all Dremel rotary tools and Dremel flex shaft. 3-jaw chuck compatible with all Dremel cordless and corded rotary tools, including drill bits, sanding drums, polishing wheels, and other light-duty accessories. Color: Gold + Black Material: Brass Package Contents: 1 x Drill Chuck Collet Set for Dremel Note: Lighting conditions and display settings may cause slight color variation between the image and the actual product. Measurement tolerance is +/- 1–3 cm.