Stainless steel threaded nipple
3 size lengths available…
1 inch (25mm) (suit boiler walls) $4.50
1.5″ (40mm) suit some cooler/esky walls $4.75
and 2″ (50mm) (suit cooler /esky walls $5.50
The 1 inch size is suitable for attaching a ball valve tap and fittings through a thinner boiler wall
The 1.5 and 2″ are suitable for connecting a ball valve tap through an esky/cooler wall.