BT40 END MILL HOLDERS BALANCED TO G6.3 12000RPM. X3(gage length)x5-3/16(overall length). 1/2 x 3 x 5-5/16.3/4 x 4 x 6-7/16. 1 x 4 x 6-11/16. 12pcs BT40 45 degree coolant thru retention knobs matching the above holders are included. SPECIAL DEAL AND LIMITED INVENTORY!!!! The item "5 BT40 END MILL HOLDERS balanced G6.3/12000rpm & 12pcs BT40 45 degree pull studs" is in sale since Thursday, May 12, 2016. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Adapters & Holders\Rotary Tool Adapters & Holders". The seller is "niuniucme" and is located in Madison Heights, Michigan. This item can be shipped worldwide.