High quality metal base keeps gas struts stable and work well. Lids soft open gently, ideal for supporting the lid to keep it open. Lid hinge can stop your toy box lid or cabinet door from slamming down, protect your fingers from being pinched. Gas Struts for Heavy Lid The cabinet hinges are designed for support on cabinets toy box with heavy door, keeping the lid soft up, detail depands on door wright, if use for light door, maybe will hard to close. Perfect Lid support for supporting the lid to keep it soft open, when you close it, need push door until it close. Package Included: 2 x gas struts heavy duty and 10 x Screws, good choice for various box/toy chest/toy box/toy storage/tool box/car to prevent from smashing hands. Gas Spring Gas Struts for Heavy Lid Widly Used Dresser Toy box or storage box under window Tatami Details of Soft Open Lid Safety Hinges Split Design Four point fixation, Strong support High Quality Air Chamber