Material: telescopic fence, made of fiberglass, , easy to install and carry, acid and alkali resistants, antis-agings strong. Details: nons-slips texture at the bottom, safe and stable when placed, not easy to tip over when working, multi-bit rounded, screws tightened, stable and when working. Movable wheels: made of nylon material, strong bearing force, easy to move, antis-corrosions. Scope Of Application: electric power maintenance, road construction, gas construction, factory workshop, supermarket entrance, etc. If you have any questions about the product, please feel free to contact us via email.