exhaust jack: 2.5 ton,3.5 ton,4.5 ton Material: 1000D nylon core with PVC coating to both sides exhaust jack:Specifications:1) Material: 1000D nylon core with PVC coating to both sides2) Dimensions of material: 0.70mm and 1mm thick overall are available options3) Layers of top and bottom: 1 layer,2 layers,3 layers are available options4) Colors of exhaust jack : Yellow ,Orange, Red, Green are ...