5 Pack 1/4" Male NPT Air Compressor Moisture Tank Drain Water Petcock Brass Brand new 5-pack of 1/4" male NPT air compressor tank moisture drains. These are top-quality o-ring sealed drains. This style of drain is much easier to use than petcocks with a "Tee" shaped handle and no o-ring. Unlike the cheaper quality tee handle drains, you can easily twist these drains open and shut with your fingers! This drain has 1/4" male NPT threads that screw into your drain port. If you want a drain that is easy to open/close and keeps a leak-free seal, you will love this drain! Features 1/4" Male NPT Threads (measures about 1/2" diameter) 5 Pack Solid Brass Construction Easy Twist Open/Close 9/16" Wrench Needed For Install