Yale locksets are available in a range of handle styles, materials and finishes and are supplied with one of the following upright mortise locks: 2 Lever; 3 Lever; 4 Lever; Euro Profile Cylinder. All Yale locksets carry the SABS mark of approval. Please note that locksets are graded by application. For example, a 3 Lever lockset used on an internal door would be graded as High Security whereas the same lockset used on an external door would only meet Medium Security requirements.