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

steel Collet chuck model: CAT40 x ER20, collet chuck length: 4 inch, collet chuck thread: 5/8 inch - 11. The collet chuck set is made of solid materials, with high hardness and durability. The collet chuck set has high precision, strong clamping force, strong seismic resistance and stable precision during processing. The CAT40 ER20 tool holder has high concentricity, good processing effect and improved processing efficiency.