Have you noticed how the EVO 4-9AYC hose replacements that most people supply are almost impossible to fit?
Basically the male-male adaptors supplied use 19mm "flats". This means that as you go to tighten the adaptors on (some) AYC pumps, you cannot get them tight enough.
Well, we have fixed this!
Our Adaptors use a 14mm spanner! No more leaky AYC hoses!!
Price is for ONE (1) adaptor. You will need 4