Reversible pneumatic impact wrenches with torque control and automatic air shut-off, indispensable where very high torque repeatability is required both in the presence of rigid and elastic joints. The tightening torque is adjusted by varying the compression of the main spring of the clutch, by screwing or unscrewing the threaded adjustment ring nut by inserting the supplied screwdriver in the special niche obtained on the ring nut itself, the adjustment ring nut can be reached through a slot on the tool body. The standard equipment includes a complementary spring for the clutch. Features: Pistol grip with push button start and reverse. 3-point power supply for use in different work layouts. Supply: Non-lubricated and lubricated compressed air - Recommended pressure 6.3 Bar