XIANQI Perfect to provide a brace on any structure, and to create a frame. Ideal for display items such as greenhouse, Dog Cat Bed, Sheds, Tent connection, Tomato Support Frame, furniture, shelves, pool products, and so much more. Inner diameter: 16mm. Fit for out diameter 16mm PVC pipe or metal pipe. Made of high quality PVC furniture grade material, More stronger and better looking than ordinary PVC fittings, good quality features for long service life. Suitable for indoor and outdoor use. They are designed to withstand impacts, can withstand heavier weights and they own higher manufacturing processes than ordinary pipe Tee. Ideal for edge, corner and center connections. Easy to install. This is a quick and easy solutions for constructing any type of 16mm PVC or metal pipe. Product color: green Product size: 16mm