This cylinder housing and 5-pin tumblers of this lock are constructed of brass, it comes finished with a chrome face and features a hardened cut-away tail piece. This cylinder lock is used to key lock most surface mounted patio door handle sets and works with vertical and 45 degree key ways. Compatible key ways include those manufactured by Weiser, Kwikset and Weslock. Tip: if keyed-alike cylinders are desired for more than one lock, kindly see Prime-Line part E 2107.