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Stair-Climbing Cylinder Trucks
![](/prerenderstable/mvPRE/contents/gfx/imagecache/877/8777t13p1-e01f-digital@halfx_637007078317782591.png?ver=imagenotfound)
A rotating nylon belt helps move these trucks over stairs and curbs. A chain secures the cylinder and curved cross-braces support the cylinder when the truck is tilted.
Tread-on-core rubber wheels have a hard core with a shock-absorbing rubber tread. Pneumatic rubber wheels provide a cushioned ride over the roughest surfaces, such as gravel.