1/2" x Close Brass Pipe Nipple Price test: $1.24 3/4" x 500ft OxyPex Tubing with Oxygen Barrier Price test: $229.95 3/4" x 300ft OxyPex Tubing with Oxygen Barrier Price test: $149.95 1/2" x 1200ft OxyPex Tubing with Oxygen Barrier Price test: $345.00 1/2" x 1000ft OxyPex Tubing with Oxygen Barrier Price test: $279.95