Yale Window Locks 8K101 Particularly suited to narrow framed hinged wooden windows. The lock is fitted to the opening window and grips onto the frame fixed staple. Secured by key, with Alan key or Yale P130 Window Lock Hexagon Key (not included) a sturdy clenching action is effected between window and frame. Fixing screws are concealed when locked. About this Item Lock is surface-fixed onto the window section and is locked around the frame fixed A clenching action helps to pull the window to frame Reduce draughts Suitable for hinged timber casement windows Wooden Windows Only Yale B-8K101-50-WE White finish Window Lock Quick fit security Simple to operate Deters intruders from breaking glass to release catch Lock with Alan key or Yale P130 Window Lock Hexagon Key (not included) Box Contents x50 Yale Window Locks 8K101 x200 Screws