This product is available in various sizes, including 1/2", 3/4", 1", 1.25", 1.5", and 2" waterbutt hosetails. These hosetails serve as outlets for water storage containers or can be used as overflows. Each hosetail is equipped with a barb suitable for connecting standard garden hoses of their respective sizes (e.g., 1/2" hosetail with a 13mm barb for a 1/2" garden hose). Additionally, they feature bsp threads corresponding to their sizes, requiring specific hole diameters for installation (e.g., a 1/2" bsp thread requiring a 21mm hole). To secure the hosetail to your tank, a removable nut and washer are included. Installing the hosetail is simple: drill the appropriate hole size, insert the hosetail, and reattach the washer and nut from inside the tank to ensure a secure fit. Constructed from durable polypropylene, these hosetails are built to withstand years of use. They can be utilized as overflows or to connect multiple waterbutts together using 13mm flexible corrugated pipe.