ER11 Extension Rod & Bar Set with 7 Collets, Er11m/60L/Er11a forTools 1set Er11 C6 Er11m 60l Extension Rod Extension Bar Straight Shank With Er11 7pcs Collet With Er11a FG05 Built in self-Release design and tools will never get stuck in holderWidely used,boring,milling,drilling,silk attack,sculpture,CNC,and other processing.Use with any standard ER collet chucks for coolant-thru applicationsEach collet is well packed in separate protective container with label.Hardened and precision groundPerformance stability,high accuracyDurable in use.Name:Extension Rod with ColletColor:black+silverMaterial:40CRPackage Contents:1* C6 EXTENSION ROD7* ER11 spring colletOnly the above package content, other products are not included.Note: Light 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.