Features 1、Straight rod type extended collet shank, longer shank, suitable for deep hole processing. 2、Can reduce the use of extended tools, reduce costs and improve efficiency. 3、The nut is directly tightened, the product has high rigidity and strong holding force. 4、The outer diameter of the extension rod and other parts have been finely polished to eliminate the unbalance and increase the stability during cutting. 5、Wide range of uses, can be used for CNC lathes, milling machines, drilling machines, etc. Specification Item Type: Lathe Collet Extension Rod Model: SL20-ER32-80L Material: High speed steel Uses: CNC lathes, milling machines, drilling machines. Shank Diameter: Approx. 20mm / 0.8in Adapter Chuck: Approx. 32mm / 1.3in Handle Length: Approx. 80mm / 3.1in Package List 1 x Extension Rod