20mm (Three quarter inch) black steel fittings
Three 20mm (Three quarter inch) black steel fittings. These are 3/4 inch 20mm internal for 26mm external dimension plumbing pipe fittings and plumbing pipe lengths in Black Steel finish threaded as 3/4″ BSTP. Finish with Raw diluted Linseed Oil to make rubbed iron furniture and decorator components.
This is a pipe and fitting that is now referred to by a metric size name 20mm