Master Mechanic 2-Pack 3/8" barbed x 1/4" NPT male hose end. Pre-applied teflon thread sealant. 2 Pack Size: 3/8" barbed x 1/4" NPT Male hose end Pre-applied teflon thread sealant. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defect