Semi-Pneumatic Wheels

Not just another industry standard copy, but designed by an Automotive Tire Engineer
Butyl which is used in automobile tires will hold air twice as long as competitor’s natural rubber – up to 4 months
2.0mm thick 3-piece zinc plated steel hub. Most competitors use a 1.2mm or less thick hub
True 4-ply nylon tire construction, not a factory 4-ply or 4-ply equivalent as most competitors
20% new virgin rubber, not the only 6 to 8% of new rubber used by most competitors
Ground hardened precision bearings standard, not the soft inexpensive flanged ball bearing as used by others
Tire Pressure to 50 PSI