The HERCULES™ 20V Brushless Cordless 1/2 in. Ultra Torque Impact Wrench with Friction Ring delivers 1500 ft. lbs. of bolt breakaway torque at speeds up to 1600 RPM to power off nuts and bolts quickly. The convenient four-mode selector operates at three speed ranges of 0-600/0-1100/0-1600 RPM . Auto mode includes both auto shutoff/bolt removal mode to prevent overloosening fasteners and auto-tighten mode to prevent overtightening. Pair up with the HERCULES™ 5 Ah battery pack or greater to deliver more work per charge and more work over the life of the pack.