To supplement our range of Top Drive and Kelly Saver Subs, Sub-drill introduced a range of Top Drive Saver Subs with Splined Design to suit the latest Top Drives on the market.

Precision machined at our facility in Westhill, Aberdeenshire, all of our Top Drive and Kelly Saver Subs are manufactured in conformance with OEM specifications and latest industry standards, and are available in a full range of thread types.

Top Drive Saver Subs, Splined Design