SmartLock is a family owned company that cares deeply about the quality of the product they produce and sell to their customers. HVAC/R fittings are the bread and butter of what they do so they are hyper focused on producing the highest and consistent quality fittings. SmartLock fittings are a superior product that utilizes metal to metal sealing technology for a more secure and permanent seal, compared to other fittings on the current market that uses rubber o-rings as the main sealing agent.