Material: Stainless steel. The bracket has high anti-rust performance, does not rust, prolongs the service life and saves terminals. High-quality greenhouse glass clamps ensure the safety of your greenhouse. Suitable for a variety of materials, such as hollow bricks, various wallpapers, glass greenhouses, etc. Suitable for almost all aluminum frame greenhouses, to install greenhouse glass in the aluminum frame In case of typhoon or heavy rain, you can prepare these clips in advance to reinforce your greenhouse windows and avoid damage. Packing list: 50 x 304 stainless steel W clips, 50 x 301 stainless steel Z-shaped overlap clips. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.