VEVOR 5 PCS Collet Set, CAT40 ER32 Collet Chuck, for CNC Engraving Machine & Milling Lathe Tool (CAT40 ER32) Heavy Duty Design High Accuracy 2.75" Gage Length High Speed Effortless To Operate Wide Application Speed: 8000 RPM,Accuracy in Tenth, 0.0001-0.0002" max:,Gage Length: 2.75"/70 mm,Material: 40Cr