Drill Chuck Collet Set: Our chuck set with with 11pcs (0.3 0.8 1.0 1.2 1.6 1.8 2.0 2.2 2.4 3.0 3.2 mm) brass collet, 3pcs chuck and 2pcs wrench. It can meet your different needs for more applications 4486 Chuck: This collet are made of high quality stainless steel, specially heat-treated, durability. Tool jaws are perfectly shaped, internal three claw design, easy to grip the rotating blade attachment, solid metal construction for strength Brass Collet: Made of high quality brass for wear resistance and durability. The 4-claws design ensures powerful gripping, firmly holding drill bits in place Metal Nut: Made of metal material, sturdy and stable. The plastic nut on the market often break during use, the all-metal nuts in this set are and reliable, ensuring and safety in your rotary tool applications Wide Application: Our drill chuck collet chuck set is compatible with for rotary tool and ideal for light-duty accessories including drill bits, sanding drums, polishing wheels, wire & bristle brushes, and cut-off wheels Colour:As shown Material:Metal Package Contents: 1 * Drill Chuck Collet Set 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.