Size - Model: ER-20, Clamping Diameter: 10mm, 12mm, Precision: 0.015mm / 0.0006", Outer Diameter(Max): 21mm / 0.83", Total Height: 32mm / 1.26"
Material - The Spring Collet Chuck is made of 40Cr Steel, general hardness, and wear resistance, and is sturdy for your long-lasting use.
Precision - 0.015mm / 0.0006-inch. All critical collet surfaces are precision ground for a precise fit, enhanced clamping force and good resilience.
Applications - Suitable for manual vertical or horizontal milling machines, drilling machines, CNC milling lathe tools, work-holding engraving machines, high-speed machines, and other equipment.
Package Content - 1pcs x 10mm Clamping Dia Spring Collet, 1pcs x 12mm Clamping Dia Spring Collet