Auto Meter 2264 Temperature Sensor Adapter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>5/8 inch-18 UNF female to 1/2 inch NPT male</li><li>Adapts directly to sealing nut on Auto Meter mechanical temp gauges</li><li>It's a 1/2 inch brass</li></ul></div><img src="http://ecx.images-amazon.com/images/I/415r0kRSC1L.jpg" noproxy>