C1-ER32UM 4 inch UM-Type Nut ER Extension Rod Straight Shank NC Extension Rod Tool Holder Tool Engraving Machine Collet Product Information: Name: ER straight shank extension Shank Diameter: 1 inchs, Shank Length: 4 inch (100mm), Shank Precision: 0.01mm Model: ER32UM Type Material: DN65 Hardness: HRC50 Features: The straight rod collet handle has a long handle body, suitable for deep hole processing. It can reduce the use of extended tools, reduce costs and improve efficiency for CNC Lathe Milling Package Includes: 1 x Straight shank chuck
