The most frequently requested socket head set screws (S.H.S.S) are now conveniently being offered in English and Metric hardware kits. The rugged plastic box has 12 small compartments and closes securely to ensure organization. Inside cover label illustrates the position and the description of the included S.H.S.S and the appropriate replacement part numbers. Supplement your kit with allen wrenches, thread-to-thread adapters and other optical bench hardware. Individual packages of the English and Metric S.H.S.S. are also available.