This latch is made of high quality stainless steel. The surface is multi-layer polished, not easy to rust and durable. This door lock is only suitable for 90° angle installation. It measures 85 x 31 mm and is easy to install with the included screws. The latch is keyless and can be controlled by a rotary switch. Suitable for bedrooms, offices, garages, cabinets, etc. Provides privacy for your life and work and helps prevent thieves.