Attention: Please measure the diameter of the old wheel, the outer width, the inner width, and confirm the detailed size information in our pictures before purchasing!! The diameter of this luggage wheel is 60mm, the rim width is 18mm, the total wheel width is 21mm, and the inner diameter of the center bearing is 6mm, the length of the axles is 36mm. Suitable for most single rolling luggage, you need to cut off the post or drill out the riveted axle bolt/pin on the old luggage wheel, then put on the new ones and tighten the screws and axles with the reservations and Allen wrench! (Please check the installation instructions in the product pictures!) Each package includes 2 x Black Rubber Wheels, 2 x Axles, 2 x Axle Screws, 4 x Washers, 2 x Keys. This set of 2 replacement luggage suitcase wheels is made of high quality rubber + metal, integrally molded, durable and quiet, wear-resistant, quick and easy, and smooth turning on the ground. Simply replace the old wheels to extend the life of your suitcase, this set of replacement wheels for luggage can ensure smooth and silent rolling, better enjoy your travel time!