If for some reason you don't get Matt's package I think 5/8 inch heater hose sold at any auto parts store will work. They usually sell it by the foot at the parts store.
STOP the bad vibes ,
this is MUDSHIP at the CORE fundamental level
it will be there .,
read the express bubble mailer its guaranteed to arrive on time
this is the USPS
not fed ex or brown frown ground service !
+
this is only way i roll , advanced logistics