On-Site Locks & Keys Repairs offers professional locksmith service in Hamilton and the Tri-Cities area at affordable prices. We believe that being honest and providing excellent customer service is the way to success, We have more than 20 years of experience in the locksmith industry, and we are up to date trained on the new locks models and technologies. Our technicians are highly skilled and qualified to repair any lock and key problems and all major lock brands. We use only genuine parts and carry a large quantity of parts in our trucks. Our mission is to repair your locks on the first visit.