The ER11 collet set includes 13 pieces, suitable for internal drilling, machining, drilling, engraving, and CNC work. The clamping range varies from 1 mm to 7 mm. Features:

• Made from high-quality steel
• High precision with a tolerance of 0.02-0.04
• Good elasticity and impact resistance
• Self-release design to avoid sticking in the holder
• Each collet comes in a separate protective case with size marking

Material: 45# steel Model: ER11 Clamping range: 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm