The core of the Rollerblade Hydrogen Wheels are designed in a way to give you more flex

Micrometric Buckles X2 + Toe Strap Marathon

Mounting: UFS

and carbon steel hockey blade

They create less friction and are thus faster than Super REDS®

Ghetto Child Haywood Concrete Rose Skateboard Wheels 53mm 101A (set of 4) PowerDyne The core of the RollerbladeShred the streets in floral style with the Haywood Concrete Rose 53mm 101a white skateboard wheels from Ghetto Child. The sturdy 101a durometer lets you slide and shralp smoother pavement with ease, while the 53mm sizing makes flip tricks a breeze. Rose graphics on the sidewalls add some alluring verdant detail, so you can keep your tricks and your setup as fresh as can be. Haywood Concrete Rose 53mm 101a White Skateboard Wheels from Ghetto Child.