100 mm outer diameter 608 ABEC-9 bearings and spacer included Strong aluminum alloy hub 5-spoke pinwheel core Black wheel & silver core Sold individually These 100 mm pro kick scooter wheels feature the great looking 5-spoke pinwheel core, and they are machined from a strong and and lightweight alloy With their black wheels and silver core, these wheels have the good-looking style you want you need, but light enough to roll with the pros 30 Day Warranty Description These 100 mm pro kick scooter wheels feature the great looking 5-spoke pinwheel core, and they are machined from a strong and and lightweight alloy. With their black wheels and silver core, these wheels have the good-looking style you want you need, but light enough to roll with the pros. These wheels are sold individually to allow you to tailor your scooter’s performance and aesthetics. Each come pre-installed with 608 ABEC-9 bearings and spacer.