Premium Metal Material: The glass connector clamp is made of high quality stainless steel, strong and durable, corrosion resistant, not easy to rust. Note: Please pay attention to measuring the thickness of the glass before purchasing to confirm whether it is suitable. Non-slip design: Screws with non-slip rubber head, can firmly lock the glass to prevent slipping. Suitable for 5-8mm thick glass, chalkboard or acrylic plate. Easy to use: 90 degree glass corner clamps are easy to install, no need for drill holes. Wide Application: Perfect for fixing or assembling glass panels of glass draft shields, showcases, aquariums, showcases, etc. Contents of packaging: 4 stainless steel right angle fixings.