Basic InfoModel NO.:420*200mm,Website:://.hzzlauto.com, 420*220mm and 420*180mm.Type:Brake ShoesMaterial:Non-AsbestosPosition:Axle AssemblyCertification:ISO/TS16949, TS16949, ISO9001Classification:DrumDrum Brakes Classification:Brake ShoeBenz Brake Shoes:Ror Brake ShoesBrake shoes assembly prodcution process as below: We have our sepate production line to make break shoes, 600T punching machine to stamp the Steel plate as designed size, auto-welding machine to weld the break lining on break shoes, and the roll pin position go through heat treatment to improve the hardness and strength. On quality control aspect, we size the clearance with a feeler gauge, and the gap less than or equal to 0.8