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 applications4486 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 strengthBrass Collet: Made of high quality brass for wear resistance and durability. 4-claws design ensures powerful gripping, firmly holding drill bits in placeMetal 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 in your rotary tool applicationsWide 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 wheelsColour:As shownMaterial:MetalPackage Contents:1 * Drill Chuck Collet SetOnly 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.