Features:_x000D_ _x000D_ Made of high-quality manganese steel, it has high hardness, high rigidity and strong clamping force, suitable for long-term use. _x000D_ Straight shank type extended shank with long shank for deep hole machining to solve the need for extended processing depth. _x000D_ It can reduce the use of extended cutters, effectively reduce processing costs and improve work efficiency. _x000D_ The outer diameter of the extension rod and other parts are precision ground, eliminating imbalance during cutting and increasing safety. _x000D_ Every detail of the product has been carefully processed to keep the stability and accuracy of the product. _x000D_ _x000D_ Specifications:_x000D_ Condition: 100% Brand New_x000D_ Material: manganese steel_x000D_ Standard: C3/4 ER20A-50L_x000D_ Clamping rod diameter: 3/4_x000D_ Rod length: 50mm_x000D_ Clamping range: 1-13mm_x000D_ _x000D_ Package list:_x000D_ 1 * Milling Extension Rod