This sliding patio glass door handle set has a centered keyed exterior pull and can be installed on either left or right-handed mortise-locking doors. Includes a diecast inside pull, thumb turn with steel latch activator, a diecast outside pull, keylock, and assorted screws to accommodate various door thicknesses. The key lock features a hardened break-away tailpiece; note: Measures 3-15/16" on installation hole centers.