FSH1900-D Restritor Friction Stay( With Stop) 1) Size:8"-18" 2)Material:ss201,ss202,ss301,ss304 3)High bearing capacity. Window Hinge FSH1900-D Restritor Friction Stay(with-stop) Series1)Material:SS304 ,SS301 ,SS202 ,SS201.2) Be suitalbe for aluninum windows and ventilators.3)Operates normally after 30000 times strict opened/closed.4)Available for left and right hands.5)All friction stays are ...