4Pcs BT40 ER32 Collet Chuck 70mm Long BT40 Tool Holder  with free Retention Knob

Packing List: 

• 4 PCS BT40-ER32-70 Collet Chuck+ 4 PCS ER32 Collet Nuts+4 PCS BT40 retention knobs

Feature:

• BT40 taper shank is in conformity with A3 standard
• Concentricity of the inner and outer cone: 0.003mm
• Default balancing: G2.5/25000RPM
• Material: 20CRMNTI
• Hardness: HRC56-58

Free shipping, 5-10 days to your door by UPS/DHL.