Description: Bearing spacers are designed to create a nice smooth axel spin and will help prevent your bearings from collapsing, and the bearing will be motionless without the bushing. These spacers will fit all standard skate wheels. Material: Premium Quality Aluminum Alloy Inner diameter: Approx 8mm / 0.3 inch, Length: approx 10.22mm / 0.4 inch These are basic replacement bushings for most skates, durable and useful The skate bushing will get abrasion after long time use, in order to keep the wheel bearing smoothly, it is necessary to change the bearing bushing regularly Package Includes: 8 x Blue Skate bearing spacers 8 x Red Skate bearing spacers Note: Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Meanwhile, please be reminded that due to lighting effects, monitors brightness/contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item.