VERY ROBUST: Glass clamps protect your garden greenhouse from wind and weather. This 50-pack of greenhouse glass clamps is the optimal size and ideal for securing polycarbonate sheets of maximum strength. 6 mm. Durable: The fastening clip is highly rust-resistant, which extends its service life. Accessories: W-clamps are used, for example, as accessories for attaching double-wall panels (honeycomb), polycarbonate panels, toughened safety glass (ESG), and veneered panels, as the number of supplied fastening clips is often insufficient. Dimensions: The dimensions of the fastening clip are 75 x 30 mm, and the material thickness is 1.2 mm. Protection: To ensure you always achieve a satisfactory harvest, our garden greenhouses protect your plants, vegetables, fruit, and lettuce from hail, rain, wind, and sun.