Product review (3 stars): I like the fact that they are color coded and perfect ...
I bought these to flush my Rannai water heater. I like the fact that they are color coded and perfect length for what I needed to do. The hoses connected to the unit and into the bucket on the floor with maybe a foot to spare.

Unfortunately I should have bought hoses with stainless steel coupler since after an hour in the white vinegar bath the couplers had discolored and most of the finish seems to be etched off.

otherwise worked as expected