62mm x 37mm and 62mm x 31mm Poly-BD wheel on Cavity Back hub
The Tile Biter from Radar was created for use on Sport Court tile and also performs very well on coated rink floors. An innovative Cavity Back ?hub is the lightest and stiffest on the market and makes the Tile Biter the lightest Derby wheel on the market.
They plow and hockey stop easier on tile surfaces than other wheels, and because they come in 3 hardnesses and 2 widths (a total of 6 different wheels), you can get the right amount of grip and maneuverability you're looking for. What they're saying: Some skaters have mentioned that the Tile Biters skate a bit harder than their A rating, making them a great choice for those who love firm wheels.
31mm Tile Biters are the lightest Derby wheel on the market.
37mm Tile Biters are just a tiny bit heavier - but still super light!
Recommended use: Derby, Jam
Black 92A - Grip Tile floors or coated concrete
Orange 94A - Quick Dirty indoor wood floors
Blue/Turquoise 96A - X-Firm Clean indoor wood floors