for springs, i have used .074dia. stainless wire and wrapped it around some black pipe [1" i think] that was a little smaller than the i.d. of the hose. since the pipe is smaller than the inside of the hose, it will spring back to the perfect diameter. make sure the ends are deburred and "pig tailed" so they don't contact the inside of the hose, then screwed into the hose. cheap [around $3.99 for a 30" piece of wire at the local ACE hardware] and easy to do.