Strong and sturdy: Made of high-quality stainless steel, it resists rust and corrosion. The keyless design allows for easy securing of the glass door to prevent unauthorized opening. Beautiful and elegant, it installs on the underside of the door. Easy to install without drilling holes in the glass—simply drill a 0.47 inch to 0.6 inch round hole in the ground. Safe and convenient, the door lock features a twistable handle for easy operation. Suitable for glass doors with a thickness of 0.39 inch to 0.47 inch, and requires a gap between the glass door and the ground of 0.2 inch to 0.4 inch. Note: This lock is designed specifically for glass doors with a thickness of 0.39 inch to 0.47 inch. Please verify your glass door thickness before installation. Polished finish, durable, with a long service life, simple and elegant design, easy to install and maintain. Ideal for use on glass doors in homes, hotels, bathrooms, shops, offices, warehouses, balconies, and other commercial or residential spaces.