High Precision CAT40 1/2 X 1.75″ End Mill Tool Holder 1/2 Set Screw Holder

High Precision CAT40 1/2 X 1.75″ End Mill Tool Holder 3/4 Set Screw Holder

Bore Diameter: 1/2 ”

Gage Length: 1.75″

Nose Diameter: 1.22″

Rear Thread: 5/8-11

Coolant Thru: yes

Balance: G2.5 25000rpm

Precision: High Precision Runout: TIR  3μm or 0.00015 ”

Hardened: HRC58

Protection: Silver Ni Coated  (will never rusty ever）