Wheel Hardness 99a

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speed and spin

It's the 40th anniversary year of their inaugural

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Bones Wheels Spf Pro Caballero Bat Wings 60Mm Skateboard Wheels Mike Vallely Wheel Hardness 99aBONES WHEELS SPF Pro Caballero Bat Wings 60mm Skateboard Wheels 4pk Steve Caballero Pro Model BAT WINGS 60 x 34 P5 Sidecut skatepark formula 84b white About Skate Park Formula (SPF) Skatepark Formula (SPF) is very high quality urethane specifically formulated to resist flatspotting on slick or smooth surfaces while maintaining a higher rebound for a quicker response and a faster roll. Skatepark Formula has a high resistance to abrasion while not