Effortless installation - Easy screwdriver installation. Before starting, verify door compatibility: thickness 35-45 mm (1 3/8 to 1 7/8). Confirm hole size and hole range. The lower mounting screw can be aligned to different centers for precise fit every time. Spindle length is adjustable from 195 to 225 mm (7 2/3 to 8 6/7 in), suitable for screws #29 to #35. Durable, high performing construction - Made from a heavy zinc alloy for strength and durability. - Withstands up to 1000 N vertical pulling force and tested for over 250,000 opening cycles. - Advanced electroplating coating provides high corrosion resistance and a smooth, long-lasting finish. Wide compatibility and flexible security - Pre-entry handle set that is compatible and universal. - Can be paired with an electronic bolt for a complete pre-entry system. - Fits standard doors 35–45 mm thick (1 3/8" to 1 7/8"). - 6-way adjustable latch supports backsets of 2 3/8" (60 mm) or 2 3/4" (70 mm). Weather resistant - Designed to withstand rain, sun, and other weather conditions for reliable front door performance. Warranty and support - 2-year factory warranty. - If you are not satisfied for any reason, contact us for a smooth resolution. Use scenarios - Replacing worn or dated front door hardware on a standard residential entry door (35–45 mm thick) to improve security and appearance. - Upgrading a door to support an electronic bolt or smart lock integration while keeping a traditional handle set. - Installing in high-traffic entryways (home, office, or multi-family dwelling) that require durable performance and long service life.