I was kind of in a hurry when I posted this, so here's some more info. It's a Bird mini bike rolling frame with the five spoke wheels and centerstand. It's in very good overall condition, wheel bearings and steering head bearings all feel good and move freely, fenders are in good shape, front forks are straight and the wheels are in great shape (sprocket has been replaced with a belt pulley, but the original sprocket mounting plate is fine). It appears to have plenty of room for a 5 HP Briggs L head with carb mounted tank if that's your prefered form of power. I'm in Salt Lake City, Utah and I can box and ship it. $100.00 would be nice but will consider any offer.