Check the listing for details. Techniks CAT40 5/8" Shrinkfit End Mill Holder 3.75" LAG 29032. Condition: New. Listed at 250.70 USD. Techniks CAT40 5/8 SHRINKFIT END MILL HOLDER 29032 3.75" Lag WITH TECHNIKS YOUR SUCCESS HANGS ON THE RELIABILITY OF EVERY COMPONENT. TECHNIKS PRODUCTS ARE BACKED BY OUR 100% SATISFACTION GUARANTEE. Key Features Techniks Certified means the critical features of each holder has been individually lab tested, measured and inspected for quality. Techniks Certified guarantees your holder will meet or beat our published specifications. BALANCED TO 25,000 RPM @ G2.5 Custom balancing to 60,000 RPM available for optimal performance. TAPER ACCURACY AT3 Taper ground to AT3 accuracy for maximum contact with spindle. Coolant-thru stop screw included. Maximum 0.0001" T.I.R. measured from taper to collet pocket TOOL UP WITH AJAX TOOL SUPPLY