Feature: Each product has a unique manufacturing part number package label inside that demonstrates it has been qualified, including Part Number, Model Number; information and inspection date. If you have any questions about the item, please provide us with the part number for manufacturing checking, your profits will be guaranteed. They have a good load capacity, easy to install and remove, 3-hole design, suitable for bags, luggage, suitcase, with a round shape. Lightweight, heat insulation, thermal insulation, moisture resistant, flame retardant, comfortable to use. Includes a pair of left and right wheels for universal luggage. Specifications: Color: Black. Material: Plastic + metal. Brand: BQLZR. Model: W024. Wheel diameter: 4.9 cm. Dimensions: 8.5 cm x 8.3 cm (H x W). Weight: 243g. Package includes: 2 x luggage wheels (left and right), 6 x universal wheel screws.