Made from thread layers coated with SBR elastomer. Vulcanized with hot temperature under pressure in one operation. Non-slip surface providing maximum friction when stacking two lifting bag. Removable inflation connector. Sizes: 510 x 510 mm. Thickness: 25 mm. Lifting capacity: 20 t. Max. stroke: 320 mm. Max. air requirement: 288 L. Max. inflation pressure: 8 bar. Test pressure: 12 bar. Weight: 7 kg.