Premium Quality Hardware: TICONN black door handle is made of premium quality zinc alloy and brass parts to guarantee rust-free in a high humidity environment; The door lever set has a thick and smooth coating for long-lasting product life US Standard Strike Plate: The US standard strike plate allows you to replace your existing one without rework on the door frame; For majority upgrading from the existing door handles or door knobs, installation can be done in minutes with only a phillips screwdriver Reversible And Flexible: All TICONN door handles are reversible and can be installed left-handed or right-handed; The door latch can be adjusted for 2 3/8" (60mm) or 2 3/4" (70mm) from the edge; All our door knobs work for doors with thickness range from 1 3/8'' (35mm) to 1 3/4" (45mm) Wide Applications: The clean yet bold square shape of the black interior door handle adds an elegant final touch to your door; It works great with doors of all colors and in various lighting conditions; These black door knobs are perfect for bathrooms, bedrooms, offices, and rooms where privacy is required TICONN Quality Commitment: TICONN stands behind the quality of our products; If for any reason you are not satisfied with your purchase, please contact us TICONN Premium Quality Heavy-Duty Door Handle is made with zinc alloy and brass parts, it's rust-free and perfect for high humidity environments. The sleek black powder coating ensures long-lasting durability. Easily replace your existing strike plate with the US standard version. Installation takes minutes with a Phillips screwdriver. It's reversible and fits various door thicknesses. The square shape adds an elegant touch to any door. Suitable for bathrooms, bedrooms, offices, and more. We offer a 30-day money-back guarantee and 12-month warranty. Upgrade your doors with confidence, choose TICONN.