The Brass ball adapter locks into any standard 12mm CNC machining lathe or mill via the locking screw like other Brass ball nozzles. The advantage of the Loc-Line ball adapter is that it connects directly to the ¼” Loc-Line hose system via ¼” Loc-Line ball. The 12mm ball adapter brings the proven adaptability and versatility of Loc-Line to machines like CNC lathes that only have screw locking spherical coolant nozzles. Using the ball adapter increases the coolant flow options.