Spitfire Formula Four Classic Skateboard Wheels 97d 53mm size-100-00 This creates a 70% stronger

This creates a 70% stronger integral structure of our aluminum

These 54mm conical shapes grip smooth

Engineered for backpack functionality with removable contoured nylon shoulder straps

8" tall folded

9 configurable pieces

Spitfire Formula Four Classic Skateboard Wheels 97d 53mm size-100-00 This creates a 70% strongerFormula Four Urethane: An unbeatable, lasting performance urethane. Fast, long lasting, abrasion resistance with a smooth anti slip slide and controllable grip. 97 Duro: Formulated for a softer, faster ride. Designed for every spot, grips or slides when you need it. Classic shape: Medium width riding surface with round sidewalls. Designed for control in all situations.