This CRL Round Top Swinging Glass Door Lock is easy-to-install, requiring only a 3/4" (19 mm) hole in the glass to accommodate the cylinder. These attractive cam style Locks bring added security to cabinets with glass doors up to 1/4" (6 mm) thick. Locks come complete with two keys, front plate, strike plate, straight cam, washer, and hex nut. Customers needing extra blank keys can order Cat. No. LKEY.