Designed to be installed on most types of doors, this flush bolt is a stylish way to add safety to your home. Requires a mortised groove in the door 3-1/2" long x 7/8" deep. Included products: - 6" (152 mm) long with 5/8 radius end, 3/4" (19 mm) wide.- 33 mm (1.3") bolt end height, 0.08" gauge.- strike plate: 50 mm x 22.48 mm (1.965" x 0.885"), 0.045" gauge, screws and strike included; all flush bolts include 4 #6 x 3/4" flat head Phillips wood screws.