Finding the right fitting for your build can somtimes be a hassle, thankfully fleece has made it easy. This Fleece Performance Quick Connect Fitting features a -8AN O-Ring fitting, 3/4"-16 male AN straight thread O-Ring Boss (ORB) fitting with O-ring, short hex height to maximize install clearance, black anodized aluminum construction, and is available in either 12mm, 5/16" and 1/2" sizes.