【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 120 N. Please select the required Nm according to the table. if you have questions about the selection of gas strut Nm, please contact us directly., Manufacturer: ZFYQ