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. 1It has a soft shock absorbing effect because the self-pressure-regulation function. 2It can reduce shock and noise in automated mechanical operations, enhance working efficiency. 3Shell is made of high quality material, good damping, high hardness and strong heat resistance. 4Greatly reduce the shock and improve the stability. 5The spring inside can reset the piston rod fast cause the perfect movement of the check valve.