Description:4Pcs 50mm Metal Swivel Castor Wheels Trolley Caster Replacement WheelsSpecification:Material: Metal、 PU(polyurethane) Overall Height: Approx. 70mm\/ 2.76!#!amp!*!quot; Wheel Diameter: Approx. 50mm\/ 1.97!#!amp!*!quot; Tyre Width: Approx. 27mm\/ 1.06!#!amp!*!quot; Fixing Plate Size: Approx. 69x51mm\/ 2.72x2.01!#!amp!*!quot; Installment Holes spacing: Approx. 41x26mm\/ 1.61x1.02!#!amp!*!quot; Hole Diameter: Approx. 8mm\/ 0.31!#!amp!*!quot; 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 !#!amp!*!amp; hospitals etc.Package Included:4!#!amp!*!times;Swivel Castor Wheels More Details: