Our business hours are mon-sun: 24 hour service. More about us: master & grand master, single & double cylinder, industrial, commercial, residential, segal lock, licensed by nassau county dept. of consumer affairs and city of long beachlicensed, insured, bonded and insured. Our products and services include cylinders & keys, cylinders replaced, deadbolt locks installed, door closers, door closers installed, emergency service, exit devices, high security, key systems, keys & locks, locks, locks repaired, locks repaired, rekeyed, master key systems, rekeyed, restricted keys & cylinders, security and window bars. We offer service in and around industrial, residential, commercial and industrial. We prefer to use these brands: arrow, medeco, medeco high security, schlage, segal, u.s. lock and us lock. Our certifications include member of the lynbrook chamber of commerce.