Material: The Greenhouse Clamps is made of plastic,Strong and durable, it can be used for a long time. Wide Use: This clip can be used to build greenhouses, shelters, banner frames, seam frames, etc. It is also suitable for attaching tarpaulins, sun visors, greenhouse films or meshes to pipes, and is used to build greenhouses and Other ideal options. Suitable: This greenhouse clip is only suitable for metal or plastic pipes with a diameter of 11mm (0.433 inches) or16mm(0.62 inches). Easy to Use: Simply pinch the handles to open and close, firmly fixing and it will not fall off, it will be more strong than bamboo clip. Description: Material: The Greenhouse Clamps is made of plastic,Strong and durable, it can be used for a long time. Wide Use: This clip can be used to build greenhouses, shelters, banner frames, seam frames, etc. It is also suitable for attaching tarpaulins, sun visors, greenhouse films or meshes to pipes, and is used to build greenhouses and Other ideal options. Suitable: This greenhouse clip is only suitable for metal or plastic pipes with a diameter of 11mm (0.433 inches) or16mm(0.62 inches). Easy to Use: Simply pinch the handles to open and close, firmly fixing and it will not fall off, it will be more strong than bamboo clip. Specifications: Product Name: Greenhouse Clamps Color: Green Material: Plastic Size: 11mm: About 11x40mm/0.43x1.57inch(inner diameter x L) Package Includes: 60pcs xGreenhouse Clamps