√√【Enhanced Door Security & Reinforcement】: The Black U 10539 Stainless Steel Lock and Door Reinforcement Plate fits 1-3/4" thick doors, with 2-1/8" bores, 2-3/8" backset, 5-1/2" hole center spacing, and dimensions of 3-7/8" width x 10-7/8" height. It includes the Black U 10385 Door Strike Plate Reinforcement Plate — front door security devices, metal striker plates, door latch plates with 5-1/2" to 6" holes, suitable for exterior and interior door deadbolts, and for fixing door frames and door jambs. √√【Increased Security】: The Black U 10539 Door Reinforcement lock includes Black stainless steel button-head Torx sheet metal screw assortment kit—security anti-theft tamper-proof screws—with a T25 screwdriver bit. The Black U 10385 Security Latch Strike includes Black stainless steel Torx sheet metal screw assortment kit with a T20 screwdriver bit. √√【Oversized Plate – Standard Lip Design】: The Black U 10385 Security Latch Strike features an extra-long (11 inches) design to enhance security and cover damaged door frames, worn slots, and gouges from improper woodwork. It cleans up the area around the strike hole, hides flaws or broken areas in the jamb, and has a standard lip to fit standard slots. √√【Optimized Installation Design】: The Black U 10385 Door Strike Plate is made of 2mm hardened stainless steel, capable of withstanding heavy impacts without deformation. It also addresses installation compatibility issues through repositioned screw holes and an enlarged strike hole/opening, providing reliable protection. √【After-Sale Service】: For any quality issues, request a replacement or refund. Your purchase includes not just a product, but our complete after-sales support. Email us with questions—we’ll respond within 12 hours. The Black U 10539 Stainless Steel Lock and black Door Reinforcement Plate fits 1-3/4" thick doors, with 2-1/8" bores, 2-3/8" backset, 5-1/2" hole center spacing, and dimensions of 3-7/8" width x 10-7/8" height. It is designed to reinforce and repair wooden or metal doors.It includes the black U 10385 Door Strike Plate Reinforcement Plate — front door security devices, metal striker plates, door latch plates with 5-1/2" to 6" holes, suitable for exterior and interior door deadbolts, and for fixing door frames and door jambs.