floor spring, floor hinge, spring closer, door closer 500,000 times open/close tests. Capacity weight100- 130kg. floor spring,floor hinge, spring closer, door closer, ground hinge,ground spingcan match MAB, DORMA & NEW STAR pivot.iron body+SS304 cover, cover can be PSS&SSS.very popular design in South East Asia, Africa market.very good spring&oil.500,000 starting times guaranty.suitable for double swing door Width of 800 X 1200mm and door weight of 100-130kg.The door can be opened to Max.105 degreees and closing effect is 90 degree with double section adjustment.OEM is welcome.