【Hinge material:】Plastic + Iron + Copper. The shaft is made of high-quality materials, with high strength, durability and practicality. A box contains 4 cabinet hinges. Please refer to the cabinet door Width/Height in the table before purchasing. 【Product details:】Cylinder block and connecting rod: with stronger load and flexible switch. Wear-resistant ABS has an easy-to-open circlip device, which is more durable. 【Stable installation:】Easy to install, circular metal mounting plate: the contact area of the cabinet is larger, and the three-point position makes the installation firmer. 【Scope of application:】Hydraulic support, automatic expansion. Suitable for drawers, kitchen cabinet doors, cabinets, etc., most suitable for cabinets. 【Gas pressure:】Each Gas Spring has 150 N. Please select the required Nm according to the table. if you have questions about the selection of gas strut Nm, directly contact us., Manufacturer: ZFYQ