The set of ER20 collet wrenches consists of 13 pieces and is suitable for internal drilling, machining, drilling, engraving, CNC, and machine spindles.

• Clamping range: 1 mm to 13 mm
• Material: 45# Steel
• Precision: 0.02-0.04
• Features: High-precision construction from hardened material, good elasticity, and impact resistance.
• Design: Automatic release to prevent tool sticking.

Each collet is packed in a separate protective case with a label and features size marking for easy identification.