Item Type: Collet Chuck Holder Model: SL32-ER32-80L Material: High speed steel Purpose: Lathes and various machining centers Shank Diameter: Approx. 32mm / 1.3in Handle Length: Approx. 80mm / 3.1in Adapter Chuck: Approx. 32mm / 1.3in Scope of Application: CNC lathe, milling machine, drilling machine 1、Internal cooling through hole and the central through hole design, conducive to water cooling 2、Anti?vibration and more anti?bending, helps for reducing the use of long knives 3、Advanced vacuum quenching furnace, can realize carbon and oxygen co?permeation, increase the hardness of the tool shaft and enhance the lifespan 4、Adopt hex nut, convenient for clamping, loading and unloading more convenient, possess high rigidity, strong clamping force 5、Can reduce the use of lengthened tools, good for you to reduce costs and improve efficiency 6、UM type ER extension rod is tightly fitted with fine teeth. The size of the ER chuck used for mounting and the size of the nut is also different 7、Accurately ground outer diameter of the extension rod and other parts, can eliminate the imbalance and increase the stability during cutting 1 x Collet Chuck Holder