This platform which is specifically designed for R&B's 20-bushel poly trucks will allow the load to move higher, as weight or capacity is reduced making it a great safety option. Each spring platform comes with four specially designed corner zinc-plated hooks with vinyl protective sleeves, to prevent the potential for pinching while springs expand and contract. Please note: this item does NOT include the poly truck. Spring lifts and protective sleeves are in gray for all poly trucks. This heavy-duty wire frame is covered with flame retardant vinyl material to increase durability and function. This product is also antimicrobial. This ergonomically designed spring platform is designed to help reduce back injuries by minimizing reaching, stooping, and bending.. This is a great product that will save wear and tear on your employees. This spring platform by R&B Wire Products is a great safety option to add on to the poly trucks. Replaces 2923070.