31 Jul 4 Inch Swivel Stem Casters Heavy Duty American Size UNC 1/2″-13X1-1/2 Stem Threa
All swivel casters wheels approved by SGS，BIFMA，REACH，ROHS. Wheel Type: Stem Casters. Double ball bearing swivel head. Material: Soft PVC Rubber and Steel. Directional wheel. Red PVC wheel tire. Net Weight: 780g/1.72lbs per wheel....