Works great - used only twice. This link gives more details and illustrates a newer design. https://www.revitive.ca/revitive-medic/?gclid=EAIaIQobChMIupiRyub_6gIVJQnnCh1oSw-mEAQYBCABEgLd1vD_BwE&gclsrc=aw.ds Located near Cobble Hill village