What is "skyloop"

SkyLoop is a type of steel roller coaster manufactured by Maurer Söhne. There are currently 10 SkyLoops operating worldwide; 9 of which are identical XT 150 models with only one being the extended, XT 450 model. The first SkyLoop to open was Sky Wheel in 2004 (XT 150) while the first and only XT 450, Abismo opened in 2006. There are also 3 other models available; XT 900, Custom, and Launch, those have not been built yet.