1. Robust and reliable: These plasticmade connectors are designed for stability and reliability for greenhouse or shelving construction and provide lasting support. 2. CompatibilityWith an inner diameter of 16 mm, these connectors are perfectly compatible with 16 mm PVC pipes and metal pipes, ing flexibility in greenhouse construction, and enabling easy assembly. 3. Weatherresistant designBuilt to withstand harsh weather conditions, these connectors feature a weatherresistant design that can resist strong winds and heavy rain, keeping the greenhouse and intact. 4. Ample quantityEach set contains a total of twenty connectors, with five connectors of each type, providing ample supply for various construction needs when building greenhouses or other DIY projects. 5. Wide applicationsThese connectors are not limited to use in greenhouses. They are also suitable for stands, cold frames, furniture, shelves, and staging, making them perfect for various projects.