Aluminum alloy door and window hardware set with security lock and window limiter for sliding windows. Includes 2 keys. One piece (Block 2). Key benefits and features - Durable aluminum alloy construction for long lasting use and corrosion resistance. - Security lock provides reliable locking to deter unauthorized entry. - Window limiter enables controlled opening for safety and protection against accidental openings. - Designed specifically for sliding windows to ensure smooth operation and proper fit. - Includes 2 keys for convenience and spare access. - Simple one-piece assembly streamlines installation (Block 2). - All-in-one hardware solution suitable for doors and windows when upgrading sliding configurations. What is included - 1 piece (Block 2) aluminum alloy door and window hardware set - Security lock - Window limiter - 2 keys Compatibility and use - Ideal for sliding windows and compatible door/window installations using aluminum alloy components. - Replaces or upgrades existing hardware to improve security and safety. 2-3 practical use scenarios - Residential balcony or patio sliding door: enhances security against forced entry while limiting how far the door can open for child safety. - Apartment or condo windows: provides a compact, durable locking solution that fits standard sliding window designs and includes spare keys. - Office or commercial space with sliding partitions: improves security and safety for interior or exterior glass door/window configurations while maintaining easy operation. Why this helps - Improves security with a sturdy lock. - Improves safety with a built-in window limiter. - Simple, reliable performance tailored to sliding window applications. - Durable, low-maintenance aluminum alloy construction with included keys for immediate use.