This type of connector is used throughout the cleaning industry. These ones are top quality fitted with twin viton seal to resist heat and chemical attack.
Both male and female are 1/4″ bsp thread
Hose joiner for standard size vac hose – 1.5″
Made from very tough plastic – you will lose it before you break it!
BARBED CONNECTOR TO TAKE 1.5″ VACUUM HOSE