Shred like a big dog on Spitfire's Formula Four Pro Classics 53mm 101a skateboard wheels! These Miles Silvas pro-model shredders come in a versatile 53mm diameter, perfect for flip-trick aficionados and speed demons alike, while the 101a durometer will let you sail and slide right over smooth concrete. With graphics of a snarling canine decorating the sides, accompanied by Miles Silvas' name, these wheels will lend some fierce flair to any shredding setup they're included in.