brake drum 500 mm o d size 500mm width 220 mm thick 25 mm rating 77 kgm material m ild steel heavy duty specification as per drawing make any make warranty period 30 months after the date of delivery brake drum 500 mm o d size 500mm width 220 mm thick 25 mm rating 77 kgm material m ild steel heavy duty specification as per drawing make any make warranty period 30 months after the date of delivery brake linear comes in roll dimension 210 mm width x 12 mm thick make