NOTE: Please measure the old wheel's diameter, inner width, outer width, and confirm the detailed size information in our pictures before purchasing!! The diameter of this luggage wheel is 50mm, the rim width is 18mm, the total wheel width with bearings is 21mm, and the inner diameter of the center bearing is 6mm, the length of axles is 36mm. Suitable for most single-wheel rolling luggage (Please check if it is suitable!), 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 wheel, and tighten the screws and axles with the reservations and Allen key! (Please check the installation instructions in the product pictures!) Package includes: 2 x Black Rubber Wheels, 2 x 36mm Axles, 2 x Axle Screws, 4 x Washers, 2 x Keys. High-Quality Material: This set of 2 replacement wheels for suitcases is made of sturdy rubber and metal, integrally molded, durable and quiet, wear-resistant, and rotates quickly, easily, and smoothly on the ground. Practical and Convenient: Simply replace the old wheels to extend the life of your suitcase. This set of replacement wheels for luggage can ensure smooth and quiet rolling, better enjoying your travel time!