What it does: A robust mechanical door lock with two hardened-steel throw bolts that increase resistance to forced entry and extend long-term durability. Key benefits: Improved security: Two hardened-steel throw bolts lock into the frame to reduce the risk of forced entry. Durable construction: A strong mechanical locking mechanism and reinforced components for reliable performance over time. Stable installation: Dual-screw design improves mounting strength and helps resist prying or loosening under stress. Wide compatibility: Fits most residential and commercial doors without electrical power or special tools. Important specifications: Locking elements: 2 hardened-steel throw bolts (deadbolts) Mounting: Dual-screw (double-screw) design for increased stability Door compatibility: Suitable for wood or metal doors with thickness between 1.37 in (45 mm) and 1.96 in (50 mm) Operation: Fully mechanical — no batteries or wiring required Why you need it: Reinforces your entry points with hardened-steel locking bolts that resist cutting and bending better than standard latches. Mechanical design provides consistent protection without dependence on power or electronics. Dual-screw mounting reduces wobble and keeps the lock aligned and secure under regular use. Typical applications: Family home front door — adds a stronger secondary locking point for everyday security. Apartment or flat entry door — compact compatibility with common door thicknesses used in apartments. Office door — practical for interior or exterior office doors where a durable mechanical lock is preferred. Installation notes: Designed for doors 1.37 in (45 mm) to 1.96 in (50 mm) thick; verify door thickness before purchase. Compatible with wood and metal doors; use appropriate screws and reinforcement plates as needed for your frame material. This lock delivers straightforward, mechanical security: hardened-steel throw bolts, a durable mechanism, and a dual-screw design for reliable mounting on standard 45–50 mm (1.37–1.96 in) wood or metal doors.