T37 quick change tool holder. 1 Boring V Holder. The quick change tool holder is positioned to mount over the two rearmost T-slots of the longer cross slide as fitted to all Myford lathes. The Quick Change Tool Kit is designed to allow quick change of tools with precise repeatability. It mounts easily to the lathe and setup time is reduced by eliminating the need to find and position appropriate packaging parts. All parts are hard and ground with bevels on the edges for safe working. This will fit all Myford & similar lathes, suitable for 90-115mm center height. 1 x 3/32×1/2×4 HSS cutting blade. Tool capacity up to 13 mm approx. The main block size is 58 x 58 x 37mm high with a 7/16 (11.1mm) bolt bore. The center bore is 7/16 inch. The capacity of the tool holder is maximum 13mm.