CRL "Tamper Proof" Sliding Glass Door Locks have an improved design that includes a housing that prevents spreading of glass doors. Fits any sliding 'all-glass' door, many wood and metal doors, too. They're easily attached - you don't need tools. Durable construction, finished in rustproof chrome. For overlaps of 3/4" to 3-3/8" (19 to 85.7 mm). Bar width is 5/8" (16 mm). Keyed randomly.