Seismic SPEED VENT 73mm 78a
73mm tall x 54mm wide SPEED VENT Wheels 53mm running surface • Offset bearing seat • Square outside edge, beveled inside edge 6.1 oz. each • Sold in sets of FOUR wheels Poured in Defcon™ urethane: Guinness WR speed • directional slide • long-lasting grip • slow, consistent wear The 73mm by 54mm Seismic Speed Vent is molded around our proprietary weight-saving Energy Conversion (EC) hub – the first tall, wide hub seen in longboarding and still second-to-none. The 73mm diameter gives it the roll speed of a larger wheel, while the weight-saving hub adds the quickness and agility of a smaller wheel, as well as enhanced rebound. Combined with lips designed for pure grip, the Speed Vent stands in a class by itself.