• Collet System : Single Angle • Collet Series: TG150 • Shank Type: Taper Shank • Taper Size: CAT40 • Projection (Decimal Inch): 6 • DIN coolant thru the flange • Shank traverse ground to obtain optimum accuracy • Meets or exceeds ANSI specifications • 0.0002" or better ensures the best possible cutting tool life • Wrench not included • Factory Balanced to save spindle life, tool life and increased productivity • Threaded through holes for a back-up screw (tool stop) or coolant through when removed • CAT40 Premium balanced to 20,000 rpm • CAT50 Premium balanced to 15,000 rpm