We all have locks and keys for a number of things that we want to keep secure. This makes having an expert and dependable locksmith shop essential. A1 Locksmith Service serves the Peninsula from San Francisco to the Silicon Valley area with the finest in sales, service and installation of all types of locks, keys, safes and security systems. They are located in Belmont at 869 Ralston Avenue, phone (650) 344-5625. Only a phone call away in emergencies and lockout situations, their fast emergency service will respond promptly to your call.