Brass reducing nipple 3/8X1/8" DN10x6 male/female thread

Brass compression nipple 10x8

Brass constriction nipple 15x8

Brass reducing nipple 1/2x3/8 DN15x10 male/female thread

Brass reducing nipple 3/4x1/2 DN20x15 male/female thread

Brass reducing nipple 1x1/2 DN25x15 male/female thread

Brass reducing nipple 1X3/4" DN25x20 male/female thread

Brass constriction nipple 1 1/4-1/2