Water Butt Adaptor Kit Brass 3/4" - 1" BSP Threaded Fitting with Outlet Options
Our 1" BSP Water butt adapters have a 3/4" BSP Female internal thread. BSP (British Standard Pipe) is a standard pipe thread size used in the UK. Our 1" BSP adapter will need a hole sized 33.3mm. 3/4" BSP Male Thread.