550 South Third Street
Winsted, MN 55395

Saver Subs, Cross-Over Subs  & Back Reamers

DPI manufactures a complete Range of Reverse Circulation Subs from Premium American-Made 4140 Quenched & Tempered Alloy Steel. We produce compatible threads to all major brands.

Saver Subs Positioned at the top of the RC String protect the Top Drive Threads.

Cross-Over Subs are mounted directly above the Hammer, channeling the cutting from the bit face to the inner tube of the drill string.

Back Reamers Adapter – connect to the hammer or bit – used to help protect the Drill String and prolong drill bit and hammer life.

API Bit Sub

Saver Sub