Our CRL Glass Door Locks with Indicator are an attractive and practical way to add security and privacy wherever 5/16" to 1/2" (8 to 12 mm) glass doors are used in glass-to-wall or 180º glass-to-glass installations. A turn of the thumbturn on the interior side of the Lock changes the color of the exterior indicator. Emergency access is made possible by a low profile screw on the exterior face. The lock comes with a wall mounted strike plate, screws, and anchors. Both Lock and Receiver come with gaskets and hex wrench.