Lathe Tailstock Die Holder Set Of 4  Floating Type MT1 SHANK Holds Imperial (Inch Sizes) Die. Shank Size Morse Taper # 1 Die Holder Sizes 1316" 1" 1-5/16" 1-1/2" Ideal for cutting accurately aligned threads on lathe machine using standard dies. Holders are held on shank by a pin which fits in slot on either side of the holder allowing about 1-1/2" of Smooth travel on shank itself, Removing the need to move Tailstock every time. Set includes a punch of size 3/8" for easy removal of split button die.