KINCJON 10pcs Brass Collet For Dremel,replacement 4485 Quick Change Rotary Most of the collets used in the market are made of aluminum alloy.This material is soft and easy to wear and tear, so we use a better quality brass material.For plastic nuts, they will break during use, and the all-metal material solves this quality problem very well.Compatible with all for tools and flex shaft.But except discontinued Models 1, 2, and Series 1 or earlier of discontinued Models 260, 270 and 280.This replacement brass collet provides a big improvement in precision and holds these tiny bits far more securely and in better alignment with the rotation of the tool, under high-speed rotation, it not only maintains stability but also improves work efficiency.The package contains: 16pcs brass 4485 collet (0.8mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.4mm, 3.0mm, 3.2mm) and 4pcs metal change collet nuts.Colour:yellowMaterial:brassPackage Contents:2 set x for 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.