Techniks 93130 | HSK63ATaper x 3/8" Size x 2.480" Diameter x 6.300" Projection Length x 8.270" OAL Steel ShrinkFIT Tool HolderTechniks ShrinkFIT holders have T. I. R. of 0. 0001" or better. Balanced to 25,000 RPM at G2. 5 tolerance. Ideal for high speed or high torque machining applications. Spindle speeds and feeds are increased to reduce cycle times & increase R. O. I. Each holder is Techniks Certified for accuracy and balance and comes with an individual lab report. Tool life is extended by as much as 700%, stretching your budget farther. Coolant thru spindle, comes with