The 74mm Advantage gives you all the edge you neet to control your direction and speed. With a 58mm contact patch, supported flexible lips, these wheels allow maximum grip on the pavement without compromising mobility or speed. Built from the "Crown" core out you can be guaranteed the smooth slide you've been looking for. With three points and two valleys to section the wheels distinct sections, chatter and vibrations are eliminated. Made out of material 10x stronger then traditional cores, the Crown doesn't deform under weight maximizing your potential roll speed.