Marble Runs 4-in-1 SetUgears Marble Runs 4 in 1 Set The Marble Run Chain Hoist, Marble Run Stepped Hoist, Marble Run Tiered Hoist, and Marble Run Spiral Hoist feauture a series of tracks, each with its own unique and fun obstacle or element. Build, play, and watch marbles weave through intricate paths. Our team of designers created these models as modular elements able to be connected together into a super Marble Run! You can connect any two or four marble runs together