We are offering hydraulic jack.single-acting flat type button. Capacity : 5 tons - 150 tons 1. Compact design for use in narrow space. 2. Single acting spring return. 3. Chrome plated plunger resist wear, rust and extend jack life. 4. Coupler sqb-38uf and dust cap are incorporated on all models. 5. There is a stop ring for piston blow out protection. 6. Maximum sized springs speed piston return and also increases spring life. 7. It has grooved plunger ends that require no saddle.