Keep Lid Open - Lid support hinges keep the lid open until you want to close it. Gas struts serve a similar purpose, but instead of raising automatically, they hold and support the lid where you want it. It is widely used as wooden box hinges, such as toy box hinges, chest hinges, and also suitable for overhead kitchen cabinets, wardrobe lids. Perfect for any lid or clamshell when soft-close lid support is needed. ADJUSTABLE TENSION - Use the Hex wrench to adjust the soft-close tension of the toy box hinges to accommodate lids of different weights. After installing the wooden box lid hinge, screw the mechanism into the Hex wrench hole in the middle of the arm to set the proper pressure to prevent the lid from slamming shut. Durable Materials -- The upgraded version has the advantage of strong load-bearing capacity, and metal connectors replace plastic clips. The cover stay hinges are made of high-quality zinc alloy for maximum corrosion resistance and durability, guaranteeing high performance. Weight Capacity - Maximum weight support 50 lbs/2 pieces, lid support hinge can be mounted on the left or right side. EASY TO INSTALL - you can easily install the cover brace. Material: zinc alloy colour: Silver Package Contents: 4 x Hinge 4 x wrench 16 x screws