Kockney Koi’s multifunction 2″ hose-tail has a array of uses. Being able to pick and choose how to use this very adaptable fittings, means you should always have a couple close to hand fit a multitude of applications. The Threaded end is a 1.5″ bsp female thread, meaning your 1.5″ male thread can fit into this on the Inside.  On the outside of the threaded end will fit into 2″ solvent weld fittings. The Barbed End can fit 2″ hose over the barbs, or can fit 1.5″ solvent weld pipe on the inside.