Made of high-quality material, durability and functionality Adopt round wheels, which can better withstand pressure and are not easy to be damaged The bearings are made of high-pressure steel, which is more stable overall. Quieter when working Fits for Gym 2000, 3000, some 3000 XL, and a few very early XL (Not suitable if your gym equipment wheel has a protruding bearing on one side) Product Name: Gym Wheels Size: . Diameter: 32mm/1.25inch Thick: 12.2mm/0.48inch Inner diameter: 5.8mm/0.23inch Weight: about 150g/set Color: As Shown Material: Metal+Plastic Package Contents: 4 * Bearing Roller Wheel Only the above package content, other products are not included. Note: Light reflection 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.