GLASS TO GLASS LOCK : A glass to glass lock is a type of lock that is used to secure two glass doors or panels together. It is usually made of stainless steel or aluminum alloy and requires no cutout in the glass. A glass to glass lock can be operated by different methods, such as fingerprint, RFID card, user pin code, or remote control. Specification : 1) 1mm Thickness of Cover Plate, 2) Can be Fitted in 12mm Glass, 3) 3 Computerized Brass Key, 4) One side key & One side Knob, 5) Long Life & Easy to Install, 6) High Corrosion Resistance.