... 0mm) Ball Bearing:3", 4", 5" BB: Polyester PU Reinforced Industrial Caster (Roller Bearing): 3", 4", 5" Mediu-Loading Heavy ... B-type Blue-Bracket Polyester Cast-Iron double brake Industrial Caster(Ball/Roller Bearing) sizes: 4"-12" Square Hinges ... slide: thinckness 1.1-1.2mm;12",14" clamp on slide: thinckness 1.0-1.2mm; 250,300,350, ... 250,300,350,400,450,500,550,600 Hook on slide: 1.0-1.2mm; 250,300,350, ...