Product Name: Trolley WheelHole depth: 3.8 cm / 1.5 inchHole inner diameter: 0.7 cm / 0.3 inchWheel size: 15.8 x 3.4 cm / 6.2 inch x 1.3 inch (D x T)Material: Plastic, foam; Color: ; Weight: 384 g4 pieces Shopping, with black plastic form a central core and a embossed foam.Replaceable cartwheel for attachment to the cart, handcart station, travel luggage and prams bicycle.Easy and convenient for installation, durable and practical wagon wheel, provides comfort for goods and luggage.Package Content 4 x cartwheelsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.