Industrial shock absorber *advantage of adjustable type (upa)1. User can adjust impact absorbed range with dampening adjustable dial(360=½+f) according to impact velocity. 2. Rapid returning piston rod by specially designed spring for next cycle. 3. Surface of outer tube and piston rod plate with chrome that prohibits corrosion and scratchs for a longer life. 4. Available attachment to any position.Max. Impact velocity : less than 3.5 m/sec Ambient temperature : -10~60 c*advantage of non adjustable type1. Non adjustable shock absorber absorbs impact object shock gradually and smoothly. Specially designed with multiple orifices 2. Non adjustable shock absorber makes impact energy exhale to heat energy in a short time 3. Hansung shock absorber made to stop smooth and quiet using a uniquely designed multiple orifice structure when injection mold inject as well as collide against robot with high speed. 4. Max. Impact velocity: less than 4m/sec 5. Ambient temperature: -10~60 c Gift box and carton box