Features: Versatile Fit: Features the U 10385 Door Strike Plate Reinforcement Plate. Ideal for front door security, metal striker plates, and door latch plates with 5-1/2" to 6" hole spacing. Suitable for both exterior and interior door, as well as reinforcing door frames and door jambs. Easy Installation: Simple to install on most standard doors, providing upgrading to your existing security measures with minimal tools required. Specifications: Material: 201 stainless steel Color: black Size: approx. 1-3/4" thick doors Package includes: 1 x Stainless steel lock and door reinforcement plate set Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays