Attachment clips: 24 available. It can clamp round pipes with an outside diameter of 16mm. Please check the pipe diameter before purchasing. DURABLE MATERIAL: The greenhouse film clips are made of high quality ABS plastic, which is unbreakable, cold-resistant and long-lasting. When not in use, they can be recycled and reused to avoid waste. Greenhouse clip: Designed with convex surface, no slippage when pressed and firm surface gloss, it can well fix the greenhouse film and play an effective protection role. Connecting function: allows quick and easy connection of tarpaulins, shade cloths or nets to any type of pipe. It can provide a good fixing effect and is easy to use, simple to dismantle and install, easy to use and saves time and effort. Wide range of applications: these greenhouse clips are used to fix tarpaulins from awnings, greenhouse films or nets to pipes. They are also ideal for building greenhouses, floors, garden sheds, co-frames, etc.