Casters, BT,NT,NC,BC,BP,FC,type 1-1/2"--2" Heavy duty Industrial Caster: 4"-8" Rubber Wheel, 6 Casters, BT,NT,NC,BC,BP,FC,type 1-1/2"--2" Heavy duty Industrial Caster: 4"-8" Rubber Wheel, 6" 8" Reinforced Industrial Caster Series AA: PPR Reinforced Industrial Caster(3.0mm) Ball Bearing:3", 4", 5" BB: Polyester PU Reinforced Industrial Caster (Roller Bearing): 3", 4", 5" Mediu-Loading Heavy Duty ...