Formula Four Radials 56mm 99a hat 5mm) urethane Dura-Cord keeps you

5mm) urethane Dura-Cord keeps you connected to your board with minimal drag

5mm neoprene chest panel for maximum rash protection and cushion

LEUS products exceed industry standards set by Oeko-Tex Standard 100

Only use recommended accessories

The construction consist of Hex-Core Foam insert

Formula Four Radials 56mm 99a hat 5mm) urethane Dura-Cord keeps youThe Formula Four Conical skateboard wheels are lightweight and poured in Spitfire's rider approved urethane formula. This urethane lasts longer, withstands more abuse and performs better than the competition. Pick which duro you're looking for after assessing the varying attributes, 'cause this is getting technical. Medium Your classic wheel shape, versatile all around wheel for street park skating.