All Pond Solutions BSP Pond Hosetail Reducer Fittings. Male hosetail fit hose0.75" / 19mm, 1" / 25mm, 1.25" / 32mm, 1.5" / 38mm. 1x Hosetail Adapter Nut. Hosetail adapters are made of high quality plastic and the threaded fittings are BSP fittings.
eBay