About Us Welcome to Mark's Safe & Lock! Mark's Safe & Lock has been a premier provider of locksmith services in Granger, IN. Our friendly and professional staff work to bring you quality service at reasonable prices, every single time. At Mark's Safe & Lock, we provide a variety of services including locksmith services, re-keying, safe services, auto lockouts, master keying, and more! We are licensed, bonded, and insured! So call now or stop in today to speak with our friendly and professional staff.