General description High-quality sliding window locks made of aluminum alloy and stainless steel, providing sturdy and durable security for your windows and sliding doors. These locks are designed to be childproof, preventing accidental openings and ensuring safety for children. Technical specifications Material: Aluminum alloy and stainless steel Single hole limiter dimensions: 3 x 2.4 x 2.4 cm Double hole limiter dimensions: 6 x 2.4 x 2.4 cm Installation No drilling installation Card installation for easy replacement No additional tools required Usage Prevents children from falling Stops accidental opening of windows Suitable for French windows, sliding glass doors, and sliding windows in various environments such as hotels, residential buildings, hospitals, schools, and offices