Adjustable Hole Spacing: The outer handle hole spacing of this front door lock set ranges from 7-11/16 to 8-13/16 inches (195-224 mm). The adjustable hole spacing allows you to fine-tune the position of your door locks within a certain range. It also makes it easy to match with a new lock when replacing it, eliminating the need to redrill and ensuring a hassle-free installation. Sturdy and Durable: Our front door handle and deadbolt set is made of high-strength zinc alloy material and treated with surface copper plating, exhibiting excellent corrosion resistance and wear resistance. This means it can withstand long-term use, changes in humidity, and general wear and tear, extending its lifespan. Its smooth surface also resists dust and dirt buildup, making it relatively easy to clean and maintain. Individually Packaged: Each component of our front door lock set with deadbolt is individually packaged, providing separate protection for every part