Comparison : Item # 1317-10-351LF, 3/8" Tube O.D. x 3/8" MPT Lead Free Brass Flared Male Run Tee
Item # 1317-10-355LF, 1/2" MPT Flare x 1/2" MPT Lead Free Brass Flared Male Run Tee
Item # 1317-10-359LF, 3/4" MPT Flare x 1/2" MPT Lead Free Brass Flared Male Run Tee