Brass chrome plated shank assembly 8-1/8″ long, bore ID 1/4″ thread 5/8″ – 1/4″. Use with hex nut and tailpiece or 5/8″ x 5/16″ pushfit to connect beer / gas line. Comes with a back nut and plastic collar. It requires a 1″ hole for installation. When set in place, the shank will only have from back of plastic collar to end of threaded shank 185mm of length to pass through your wall or fridge door, need to allow to do up the back brass locking nut.