4 pcs. Round Nylon Transfer Ball Bearing Casters Bull Wheel For Processing SystemOOTDTYOProject: Feature:Made of material, corrosion and wear resistant. 360 degree universal transfer bearings, has heavy load capacity. The protective cover ensures low torque and longevity. Precision engineered for easy installation. Widely used in transmission system, processing system, processing machinery and packaging machinery auxiliary equipment. Specifications:Item Type: Ball Bearing for Caster Roller Material: NylonSize: 48x2 0mm/1.8x0.7 inch, 70x3 0mm/2.7x1.1 inchColor: As shown in the picture Optional Type: 1:1/2", 2:1" Quantity: 4pcs Note: No retail package. Transition: 1cm=10mm=0.39 inchPlease allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 4 x Ball Bearing for Wheel Roller