Spitfire Wheels Formula Four Conical Blue Print Skateboard Wheels 99a 54mm Surfskates & Cruisers We updated the sizing on

We updated the sizing on the 44 thru 77 models for a better fit across multiple board widths

· Provide excellent knee support and can be used in conjunction with your knee pads

7-ply Birch with Epoxy Resin Glue

Female model is 5'5" wearing size Medium

Original art work by Jim Phillips

Spitfire Wheels Formula Four Conical Blue Print Skateboard Wheels 99a 54mm Surfskates & Cruisers We updated the sizing onSet of Four Wheels. Highly rated Spitfire Formula Four's True lasting Performance Urethane. 54mm height diameter x 32. 2mm width with a 20. 2mm riding surface. 99DU hardness rating suitable for all terrains. Renound Spitfire high quality poured 100% urethane. All Spitfire wheels are handpoured, shaped and specifically engineered in San Francisco CA. USA.