Avail these highly durable and reliable drilling machine sub savers from us at Riya Industries. These are basically a short drill collar with male threads on one end and female threads on the other. In addition to this, our offerings are fastened to the rest of the drill string and the bottom of the Kelly or top drive using screws. The said products contribute in protecting the drill pipe and the drive connection, a pin-to-pin sub often bears the wear abuse. Drilling machine sub savers can also provide fluted, hex, or square Kelly Bar and several other replacements.