Jacobs Chuck Jacobs 832 3MT Outside x 2MT Inside Extension Socket - GW 30449DN Extension SocketJacobs 832 3MT Outside x 2MT Inside Extension Socket GW 30449DN A Morse Taper Extension Socket is a tool used to extend the reach of Morse Taper tools in machining by providing a secure and precise connection between the tool and the machine spindle. Specifications: Inside Diameter: 0. 7 in Inside Morse Taper Size: MT2 Outside Morse Taper Size: MT3 Outside Diameter: 1. 18 in Overall Length: 7 5 8 in Country of Origin: China