PROTO Full Core Gripper Wheels - Catalyst Ledge They are made out of

They are made out of steel so they're super strong and reliable

They come equipped with ABEC-9 bearings so they'll spin fast and smooth

Secondly (maybe more important to you)

and the upper rail is as good as any round rail

The goal was simple: to design the most advanced

PROTO Full Core Gripper Wheels - Catalyst Ledge They are made out ofGripper wheels are some of the fastest wheels on the market. 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.