General description 3/4" D brake caliper wrench designed for loosening and tightening brake caliper screws, specifically for MAN and TGL HGVs. Technical specifications Size: 22mm Hex Material: Carbon steel (S50C) Finish: Black phosphate Usage Use with a 3/4" D torque wrench. When using in combination with a torque wrench, always apply the correction factor formula etched on the wrench. Other information Other sizes available: 21mm (Part No. 8538), 24mm (7341), 26mm (7342), 27mm (7343), 30mm (8538).