1/2 " npt thread with recessed allan head. Pair of pipe plugs (2) pcs. Black anodized aluminum.
NPT PLUGS 1/2" Hex Pipe Plugs Countersunk Style Male NPT Pipe End Fitting Cap US
1/8" NPT Pipe Plugs Aluminum w/ allan head 12 per pkg Red anodized aluminum
1/8" NPT Pipe Plugs Aluminum w/ allan head 12 per pkg Blue anodized aluminum
1/4" NPT Pipe Plugs w/recessed allan head 12 per pkg Red anodized aluminum
1/4" NPT Pipe Plugs Aluminum w/ allan head 12 per pkg Gold anodized aluminum
1/4" NPT Pipe Plugs w/ recessed allan head 12 per pkg Black anodized aluminum
