In deep space we located a secret Alien urethane formula originating from the natural plasma in the creatures bodies. The only way we could get it to stick to our Earthly aluminum cores was to use the very blood of the Aliens themselves to bond the materials together. Not only are the PROTO Plasmas some of the stickiest, grippiest wheels ever made but if you hold them up to the light at just the right angle you can actually see straight through them and into the future. PROTO Wheels are made in the USA and have an anodized core for durability. Featuring BUFF Core Technology to reduce dehubbing. All PROTO Scooter Wheels come with bearing removal slots for taking bearings out with ease. These wheels come with High Quality PROTO Murders Bearings Pre-installed. PROTO – STICKERS INCLUDED. Limited 90-day warranty. Made in California!