One of Mobile’s bestselling rigs, the B57 delivers 20 to 30 percent more power than other drills in its class. It includes a 14-inch double disc clutch, a single speed right angle drive, a redesigned transmission, and rotary box. The B57 is available in high torque (11,420 foot pounds) and high speed (960 RPMs) configurations. Mobile Drill International also manufactures and supplies a complete line of core tooling, augers, cutterheads and bits for the B57 and other drill rigs in its