Rollerblade Wheels 80/82A+SG7+8MM Rollerblade Wheels 80/82A Features: Rollerblade wheels are durable, absorb vibration and allow for good grip with a smooth ride. An appropriate blend of speed, control, and value with excellent performance. The Wheel Kit comes with (8) 80mm wheels, (16) SG7 bearings, and (8) 8mm spacers preassembled to make replacing wheels easy and convenient. FEATURES: - WHEELS ARE MEASURED in mm (height size) and A (durometer/hardness). A higher "mm" number means faster wheels. A higher durometer "A" number means harder wheels. Harder wheels last longer. - 80mm/82A WHEELS PROVIDE EXCELLENT PERFORMANCE with value. - INCLUDES SG7 BEARINGS AND SPACERS for convenient replacement - LESS FRICTION AND INCREASED SPEED are two of the main benefits of the SG7 silicone/grease mixture. - THE LEVEL OF PRECISION, TOLERANCE, AND SPEED is indicated by the number at the end of the bearing. The higher the number, the greater the level.