These are reusable Worm Drive Hose Clamps for beer and gas line. They can be tightened and loosened with a screwdriver.
New and unused we just have an excess of them and need them gone.
These are up to $1 each in bunnings or repco, handy for all types of hose including car and motorbike repairs, plumbing and irrigation etc.
5c each piece in lots of 5 or 10
A grade product I will keep buying from Ikeggar