4pcs 30mm Heavy Duty Trolley Furniture Nylon Swivel Castor Wheel <br>Description:Material:nylon+iron<br> Overall Height: 45mm<br> Wheel Diameter: 30mm<br> Tyre Width: 17mm<br> Fixing Base Size: 30 *30mm<br> Installing Hole Diameter:5mm Sigle Wheel Weight Capacity:40kg Net Weight:35g(1pcs)  Feature: Rubber swivel castor 30mm nylon tyre with heavy duty fixing base，durable Rotation flexible，running no voice and mark 360 degree smooth rotaion， easy to use Perfect for trolley furniture usage  Package included: 4X Nylon Swivel Castor