Male Pipe Rectus 21KA Plug SKU Body Size Threads Material Length HF21SFAW02MXN 1/8 1/8-27 NPT Brass 1.06 HF21SFAW02GMXN 1/8 1/8-28 BSPP Brass 1.06 HF21SFAW04MXN 1/8 1/4-18 NPT Brass 1.20 HF21SFAW04GMXN 1/8 1/4-19 BSPP Brass 1.20