Chrome plated brass mixer with compact trim ring. Ceramic valves for a drip free faucet. 1-3/4″ Mounting hole. 1/2″ NPT female straight connection with 1/2″ hose barb fittings included. 3/8″ hose connection fits Scandvik hoses. If you are using a shower rail; the chrome/brass bulkhead elbow may be required to route the plumbing behind the bulkhead for a clean installation.