Description:4Pcs 50mm Metal Swivel Castor Wheels Trolley Caster Replacement WheelsSpecification:Material: Metal、 PU(polyurethane) Overall Height: Approx. 70mm\/ 2.76" Wheel Diameter: Approx. 50mm\/ 1.97" Tyre Width: Approx. 27mm\/ 1.06" Fixing Plate Size: Approx. 69x51mm\/ 2.72x2.01" Installment Holes spacing: Approx. 41x26mm\/ 1.61x1.02" Hole Diameter: Approx. 8mm\/ 0.31" Each Load Rating: 60kgFeatures: 1.Double ball bearings swivel head、Would not scratch the floor. 2.Wheel Type: Black polyurethane、 twin ball roller bearings 3.Ideal for a huge variety of uses from DIY to industrial applications home、 schools、 shops & hospitals etc.Package Included:4×Swivel Castor Wheels More Details: