Nipple Swage 3/4 X 1/2 XH
ORing 13MM x 19MM x 3MM$1.39
ORing 22MM x 28MM x 3MM$1.89
ORing 33MM x 39MM x 3MM$2.49
Nipple 3/4 X 3/8 XH Swage$16.99