SHANK DIA 3/4" WHICH IS PRECISELY GROUND ON STUDER CNC GRINDER AND THE INSIDE TAPER IS ER 20.

THE FLANGE DIA 1.38" AND FACE IS PERFECTLY GROUND AND WILL SIT PROPERLY ON THE SPINDLE FACE AS A RESULT THERE IS NO CHANCE OF VIBRATION, CHATTERING OR DROPPING OF THE CHUCK.

WE HAVE BEEN MANUFACTURING MACHINE TOOLS AND ACCESSORIES FROM THE LAST 40 YEARS AND HAVE A COMPLETE MANUFACTURING SET UP, WE GROUND EVERYTHING NOW ON A BRAND NEW STUDER CNC CYLINDRICAL GRINDER WHICH GIVES US ACCURACY WHICH IS UNMATCHED.

BUY WITH CONFIDENCE BUY Q-TECH, MADE IN INDIA NOT A CHINESE JUNK. WE ARE NOT A DROP SHIPPER WHO RELY ON SOME ELSE STOCK.

DO VISIT OUR STORE AND HAVE A LOOK ON OTHER TOOLS WE HAVE FOR YOUR SHOP