There is an option for a circular drive in deadbolt for the B600/700/800 series.
See list below for available options available in 626 finish only.
12-640 Circular, drive-in, 1-1/16" housing diameter, 626 finish only 2-3/8"
12-641 Circular, drive-in, 1-1/16" housing diameter, 626 finish only 2-3/4"
12-642 Circular, drive-in, 1-1/16" housing diameter, 626 finish only 3-3/4"
12-643 Circular, drive-in, 1-1/16" housing diameter, 626 finish only 5"
12-317 Circular, drive-in, 1" housing diameter, 626 finish only Adjustable 2-3/8" or 2-3/4"
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