Quality spring steel production, with good flexibility and abrasion resistance after heat treatment

ER20 Series Spring Collet Chuck Tool Bit Holder

Clamping force, high accuracy, good stability and grip.

Can be used for holding drills, boring tools, chisel, reamers and other tools.

Material: spring steel

Size: Out dia : 21mm

Height: 31.5mm

Available Hole dia: 4mm