R8 Shank to 3MT Sleeve Fits Bridgeport MT3 Morse Taper
R8 to MT3. Long end is R8, short end is 3MT. Arbor will fit all drill chucks that with a 3MT bore and will fit on any machine tool with a R8 spindle. 7/16-20 Thread; 6" Long. Unit Weight 1-1/4 x 1-1/4 x 6.