Features:_x000D_ _x000D_ It has a soft shock absorbing effect because the self-pressure-regulation function. _x000D_ It can reduce shock and noise in automated mechanical operations, enhance working efficiency. _x000D_ Shell is made of high quality material, good damping, high hardness and strong heat resistance. _x000D_ Greatly reduce the shock and improve the stability. _x000D_ The spring inside can reset the piston rod fast cause the perfect movement of the check valve. _x000D_ _x000D_ Specifications:_x000D_ Material: Alloy + Stainless steel_x000D_ Color: Black_x000D_ Stroke: 20mm_x000D_ Max absorbed energy: 22Nm_x000D_ Energy absorb: 35000Nm/h_x000D_ Effective weight: 10-160WE(KG)_x000D_ Allowable speed: 0.8-3m/s_x000D_ Working temperature: -10~80_x000D_ Thread: M14_x000D_ Length: Approx. 12.6cm / 4.96inch_x000D_ Weight: Approx. 106g_x000D_ _x000D_ Package Included:_x000D_ 1 x Oil Pressure Shock Absorber_x000D_ _x000D_ Note: _x000D_ _x000D_ Please aim the impactor at the center of the shaft. _x000D_ Do not remove the front cap to use, because remove the cap will lengthen the piston rod and make it hit to the bottom, this may break the bottom. _x000D_ It is strictly prohibited to spray paint on the tube teeth and shaft hub, otherwise it will affect the heat dissipation effect and leak oil. _x000D_ Do not make the piston rod rust and other foreign matter. _x000D_ If there are two or more vibration absorbers are installed on the same side, Please confirm the synchronization. _x000D_ For safety, do not break it up to use._x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.