Blackriver Ramps Fingerboard Quarter Pipe Helmets Spitfire Formula Four Conical Full LTD Spitfire Formula Four Conical Full 99Duro Orange Green Swirl Skateboard Wheels have a wider riding surface and cutaway design for unmatched control and lasting speed everywhere A cantilevered outer lip with a straight profile is pliable enough to hug the road for grip while also ensuring consistent performance as the wheel wears The Blackriver Ramps Quarter Pipe Low at about twice the size of theBlack River Pocket quarter this the Quarter Pipe Low isn't too low Over 5" of transition makes blunt pop outs a little less likle to land flat and reverts a little more comfortable