Offering a cruiser performance shape with a versatile street-style size, Slime Balls welcomes the 54.5mm Alien Mini OG skateboard wheels in a black colored 78a durometer urethane for a tire-like addition to any setup. Featuring an out-of-this-world cartoon graphic on the sidewall depicting an Alien's severed body parts amongst text branding, the all-black wheels lend a super smooth ride on rough terrain - but can be put on any street board to instantly transform into a cruiser.