Lucky Scooter ATOM Pro Scooter Wheel (1-Count) KILLER DESIGN - The Lucky ATOM 110mm scooter wheel lineup features some delicious colors; The Iconic core shape has been a favorite with Lucky riders from the beginning LUCKY REBOUND TECHNOLOGY (LRT) - A combination of high-performance urethane, a new pouring process, and a proprietary curing method give these wheels a grippy, fast, and buttery roll ULTRA TOUGH & LASTING - The ATOM wheels are made from 6061 Aircraft Grade aluminum for lightweight strength and durability SLICK BEARINGS - All Lucky pro scooter wheels come with high-quality, smooth-rolling LuckySpeed bearings pre-installed; Abec 9 rated for speed and precision SPECS (110) - Weight per wheel: 0.5 lbs (0.22 kg); Diameter: 110MM