Material: less steel.The bracket has high rust resistance and does not rust, thus extending service life and saving terminals. greenhouse glass s ensure the safety of your greenhouse.Suitable for a variety of materials, such as hollow slabs, multiple wallpapers, glass greenhouses, etc.Suitable for almost all aluminium-framed greenhouses, to install greenhouse glass into an aluminium frame typhoon or rainstorm comes, you can prepare these clips in advance to strengthen your greenhouse glass panes to prevent damage. : silverPackage Contents:50* W Wire Clips50* Z Overlap Clips the above package content, products are not included.Note: shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.