[Package]: 50 Kits of greenhouse corner clips, supplied with washers which help prevent tearing of the insulation material. [Usage]: For fastening insulation bubble wraps, film and shading nets, screens to aluminium greenhouse grooved tracks. [Easy to Use]: No screws needed, simply insert into the roof channel of greenhouse and tighten to install. [Durability]: Made of non-toxic plastic, wear-resistant, corrosion-resistant, can be useful on some greenhouses where the corner slots are awkward to access. [Insulation Shading]: Fit for fixing bubble wrap in the winter and sunshade in the summer. Delivery Quantity: 50pcs, Package Contents: Only the above package contents, excluding other products. Size: 45.9x23.5x19.4mm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Color: green (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)