These were bought new for a project couple of years ago but never used. They are branded IRMA and marked 50/40/32 x 300 which I think is size of pipe (cut off the end at the appropriate size) x length.
If nobody wants them, they'll go to the dump which seems a waste!
Two Flexible plastic drain hoses - unused (Pokesdown BH6)
This offer has been gifted to someone and is no longer available.