Formula Four Conical 99a Durometer:99a and creates acceleration through the

and creates acceleration through the entire turning arc

97a means they're fast and great for parks but will still roll over rough streets and cracks a bit smoother than a real hard street wheel would

JJF Signature design

leash and other accessories

He is an ocean safety specialist

Formula Four Conical 99a Durometer:99a and creates acceleration through theThe 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. 53mm 54mm 56mm