This seat post will fit 1985 hutch trick star. Beautiful Polished aluminum 22.6 seat post. Total length of seat post is 17”. The top 1-1/2” of the seat post are criss kross knurled. Fits old hutches, Supergoose’s mongoose’s, JMC, Patterson pk ripper, TORKER, GT, Haro, redlines torkers thrusters Diamond Backs SCHWINN and the 99% of all old school Bmx bikes. 100% refundable if you are unhappy with this seat post. Seat post is solid aluminum.