Features Turn your normal coffee table into a functional coffee table,and also can be used to change the function of other furniture. This furniture mechanism hinge lift is perfect for DIY wood coffee table projects. Specifications Type 1: Lift Up Hinge Spring Type 2: Lift Up Hinge Gas Hydraulic Thickness of lift: 2.5mm and 4mm. Size: 6.77" x 8.94" x 9.45"/ 17.2 x 22.7 x 24(cm) Angle range :(125 degree angle). Length of the bottom section: approx.6.77"/17.2cm. Weight Capacity: it will hold between 100 and 220 lbs when it is opened. Mounting Screws: No Mounting Screws Included No instruction is included.Customers need to install it on your own.Note: Due to different measuring tool and ways, pls understand there may be slight measurement deviation about the datas shown.