This rare Pipeline Skateboard Co Green Machine, produced in mid 1970s, is an awesome aluminum board with a small kicktail. 23.5″ long by 5.75″ wide, the kicktail is 2.62 long. Original Challenger trucks are 2 wide. Distance from outer edge to outer edge of wheels is 5.62. Early urethane wheels are 2.125″ diameter by 2″ wide. Wheels are Pipeline Pacer with loose bearings. The front truck has three original bolts and nuts (missing one). The rear truck has four matching, but not original mounting bolts / nuts. Everything else is original. Made in San Diego, CA. This early commercial skateboard caught the wave of the urethane wheel revolution, and was an early skate deck. These boards are somewhat comparable to the early Bonzai decks from the mid 1970s. A rare find – very little info is available online.