D&D Technologies LokkLatch LLMKDST Dual Sided Magnetic Safety Gate Lock & Latch (Brushed) Patented magnetic self-latching lock prevents jamming during closure Well-designed ergonomic handle provides for unique push/pull action "Keyed Alike" provides same key convenience & eliminates extra keys Fits any 1.5 - 6 inch metal, wood, or vinyl square gate post with ease Strong molded polymer & stainless steel won't rust, bind, sag, or stain