Jacks Keys Services/Arnoldo's Locksmith is a local locskmith in the city of Upland providing locksmith and locksmith related services to the communities of Upland, Rancho Cucamonga, Claremont, Montclair and Ontario. We offer the following services: Rekeying, Lock out service, Transponder key duplicates, repair, new locks, knife sharpening, new key duplicates