Garden Hose helpers

Some useful coupling among with plugs etcUseful O-ringsInner diameter 11 mm with section 2.5 mm (gives outer diameter 16mm)Inner diameter 16 mm with section 2.5 mm (gives outer diameter 21mm)Inner diameter 18 mm with section 2.5 mm (gives outer diameter 23mm)Inner diameter 18 mm with section 3.5 mm (gives outer diameter 25mm)I have tested every connector (see the .3mf files) (except the 3-way one) – no leaks!