Classic 7ply Canadian hard rock maple

BONES creates unique urethanes for specific applications of skateboarding

Seven years of testing resulting in a ‘mountain-proof’ design

Powder Shape: Directional Twin Profile: Fusion Rocker Camber Flex: 6 Damp: 5 Width: Mid-wide Mounting Pattern: 2x4

SPITFIRE FORMULA 4 CLASSIC FULL WHEELS Size_160 Classic 7ply Canadian hard rockSpitfire Formula 4 features more speed and control on all surfaces, unmatched flatspot resistance, smooth anti stick slide, high rebound compound. 100% true performance urethane. Classic Full Shape: Wider version of the classic shape designed for lasting speed and more controllable slide.