This quick-change keyless chuck set is compatible with for cordless and corded rotary tools, accommodating accessories with shank sizes ranging from 1/32inch to 1/8inch. -piece construction of the 3-jaw chuck provides durability and stability, ensuring a secure grip on accessories. It improves precision and alignment during high-speed rotations, enhancing work efficiency. The kit includes eight sizes of high-quality brass collets (0.8mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.4mm, 3.0mm, 3.2mm) for a variety of applications. Brass collets offer superior durability compared to aluminum alloy collets. Unlike plastic nuts that can break during use, the all-metal nuts in this set are and reliable, ensuring and safety in your rotary tool applications The brass collets securely hold drill bits and other accessories, making it easy to replace damaged rotary tool accessories without the need to replace the top collet. Material: Metal colour: As Shown Package Contents: 16 x drill accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.