PET-U 4Pcs CAT40 ER20 Collet Chuck Set Collet Chuck Tool Holder Length 2.76 Inch Thread 5/8 Inch - 11

steel Product size: collet model: CAT40 x ER20, collet length: 2.76 inch, collet thread: 5/8 inch - 11. Robust and durable: CAT40 ER20 tool holder is made of solid materials, and has high hardness and durability after quenching. High precision: Collet chuck tool holder has high precision, strong clamping force, stable precision. High concentricity: CAT40 ER20 tool holder has strong universality, high concentricity, good machining effect and improved machining efficiency.