Bigfoot Longboard Skateboard Trucks Combo Set 76mm Crusher Wheels with Silver Trucks, Bearings, and Hardware Package This just add wood package contains everything you need to complete or upgrade a deck. Includes Trucks, Wheels, Bearings, Hardware, and Risers. Just add wood! Bigfoot Mountain Crushers measure 76mm x 53mm with a 83A SHR hardness. The 83A Super High Rebound (SHR) hardness provides a wheel with slide characteristics (when broken in) that will also grip and maintain high speeds The Mountain Crusher is designed for the riders looking to go fast with a wheel that will break free (slide) when necessary (good for slalom, downhill) Core trucks are light weight and feature heavy duty aluminum with grade 8 steel kingpins and axles, as well as USA made bushings and pivot cups.