Spitfire Wheels Formula Four F4 Lock Ins

• Hardness: 101D
• Size: 52MM

It gets no more classic than Spitfire! And things are getting real with the new Lock In shape. They do so with an asymmetrical shape that helps your grinds stay locked in for the long haul. Combined with Spitfire's Formula Four Urethane, these puppies are built to last. Ride the Fire!