Shrink Fit Chuck 4.5° "Cool Tool" HSK-A 63 - 3 - 80 G2.5 25,000/min. "Cool Tool" not resealable

Application:
For clamping tools with cylindrical shank of solid carbide or HSS, tol. h6.
Technical Design:
Made of special heat resistant steel. Suitable for inductive shrinking units. With four additional threads for additional fine balancing. Runout of outer taper to D1 < 0.003 mm. With four additional threads for additional fine balancing. Two holes in the tool holder lead the coolant directly to the cutting edge.
Includes:
Set screw and 2 x M3 screws to plug the coolant holes if needed
Note:
"Cool Tool" holes cannot be plugged"