You are looking at a kit of vacuum pump and hardware for Milker Milking Pulsators: Kit include a 6cfm single stage vacuum pump, Vacuum Control Regulator relieve valve with a barbed Tee, Deep Vacuum Gauge with a Tee adapter to 1/4″ flair port, and an adapter from 3/8″(pump port) to 1/2″ Barb for pulsator hose connection. For all the milker makers for cows, sheep and goats. FEATURES: Single stage vacuum pump 1/2HP, 6 CFM, with 1/4″ and 3/8″ flair ports. Vacuum Gauge, analog 2.5 inch gauge up to 30 inch Hg with a Tee adapter to 1/4″ flair pump port Vacuum Regulator, relieve valve, Adjustable Range: 13 to 29 inch Hg; with a Barbed Tee adapter to 1/2″ hose line. Adapter from 3/8 ” Flair to 1/2″ hose connector Total Weight: 25 lb All yu need is the milker and the connection hose, 1/2″, for milking operation, what ever the brand name of the milker. more products available from w3 dot milkersupply dot com