Specifications:Color: BlackMaterial:Rubber FoamingWheel Width: 25mm / 1 inchWheel Diameter: 13cm / 5 inchMounting Hole Size: 8mm / 0.3 inchLoad Capacity: 10kg / 17lbs/pieceFeatures:The foam material provides cushioning, reducing the impact on surfaces and minimizing noise while rolling.The mounting shaft should be 1.3 inch / 32mm in length at least and 7-8mm / 0.28-0.31 inch in width. The end of the shaft should have a groove.Shopping bag wheels are a convenient accessory for anyone who frequently shops or travel with heavy loads. They are designed to attach to the bottom of a shopping bag, making it easier to pull or push the bag instead of carrying it.Package Includes:4 x Shopping Bag Wheel4 x Washers.