Apexstone 100N/22.5lbs Gas Struts,Gas Springs,Gas Strut,Lift Support,Gas Shocks,Lid Stay,Lid Support,Set of 2 Lids soft open gently,Ideal for supporting the lid to keep it open Pressure:100N/22.5lb (Per Strut);Length ( hole center to hole center) :9-11/16'';Travel:3-14/25'' ,Distance between ball mounts compressed: 6-1/8" ,Distance extended: 9-11/16'' Support opens lids to a maximum angle of 100 degrees Instructions Included,Screws Included Package included: 2 X 100N Gas Strut and 8 X Screws