Wikipedia
Spacewarp (toy)
Spacewarp is line of build-it-yourself toy rolling ball "roller coasters" first made in the 1980s by Bandai. Users cut lengths of track to the correct size from a single roll of thick plastic tubing, forming curves and loops held in place by plastic track rail holders which attach to metal rods held vertical in a black plastic base. Steel balls roll around the track and on to a battery-powered Screw conveyor that takes them to the top to start all over again.
Production of Spacewarp toys ended around 1988. Replacement parts were sold until 1995.
A redesigned Spacewarp toy was re-introduced to the Japanese market in 2005 by Tanomi. Improvements included redesigned parts which were less prone to breakage.