For your next HVAC, Refrigeration, or mechanical project use Mueller 3/8 in. OD x 50 ft. Copper Refrigeration Tubing. This Copper tube is thoroughly dried/dehydrated and packed in shrink wrapping plus individual cartons for the highest level of protection. It also meets applicable ASTM Standards.For use in HVACR and mechanical applicationsMade to applicable ASTM standards B280Thoroughly dried/dehydratedConsistent dead soft temperStyle 430Type 4080Used for gas applications