Description: C20 ER20M 100L Straight Shank Extension Rod Collet Chuck Holder for CNC Lathe   Specifications: Type: C20-ER20M-100L Material: 40cr Precision: 0.01mm Clamping The Shank Outer Diameter: 20mm Collet Chuck Model: ER20 (2*2.8cm) Shank Length: 100mm   Features: 1. First clip the headgear into the nut、 and then tighten directly、 Benxi high clamping power. 2. Straight shank type extended handle、 the handle body longer applicable Deep processing、 resolve to extend the depth of processing needs. 3. You can reduce the use of longer tools、 which can reduce costs and improve efficiency. 4. The extension rod diameter、 and other parts have been precision ground to eliminate unbalanced traffic、 increasing safety when cutting.   Package Included: 1pc x C20-ER20M-100L Extension Rod   More Details: