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2-IN-1 INTERCHANGEABLE BLADES FOR UNIVERSAL FIT: Stand out from standard tools with our versatile door latch mortise tool featuring easily interchangeable square and round corner blades. Whether you are installing modern square hardware or traditional round-corner strike plates, this complete door latch installation kit adapts instantly. Perfectly compatible with both 1-3/8" and 1-3/4" thick interior and exterior wooden doors. PRECISE AUTO-CENTERING GUIDE: Say goodbye to guesswork and misalignments. Equipped with a smart auto-centering guide head, this door lock installation kit slides seamlessly into any pre-drilled 1-inch edge bore hole. It locks into position instantly without the need for manual measuring, ensuring a perfectly centered, square mortise every single time—cutting your installation time in half. FLUSH & SPLINTER-FREE MORTISING: Achieve perfect results even on hard woods. Engineered with mortise blades, this precision chiseling tool scores and cuts wood fibers sharply to prevent splintering, tearing, or rough edges. A built-in depth stop guarantees your strike plate sits completely flush and seamless, eliminating the hassle of uneven hardware, sanding, or rework. HEAVY-DUTY & ERGONOMIC DESIGN: Built to last, this door latch jig is crafted from heavy-duty, impact-resistant rubber and metal to withstand repeated hammer strikes without breaking or deforming. The ergonomic, non-slip handle provides a secure and comfortable grip, while the flat strike head transfers force evenly for clean, accurate cuts. Lightweight yet rugged enough for DIYers, handymen, and professional carpenters. EFFORTLESS PRO-LEVEL INSTALLATION: You don't need prior experience to get professional results. Highly beginner-friendly, simply align the guide head, insert the tool, tap firmly with a hammer, and clear the wood waste. Ideal for replacing old door hardware, hanging new doors, or doing quick home upgrades, this tool makes every door lock installation fast, easy.