Compatibility: Suitable for door thickness 15-18mm, please refer to the installation instructions in the picture, easy to install if the hole size is compatible. Wide Application: This door lock set is used for all doors where security is needed, especially beds and bathrooms that require private space. Perfectly suitable for home boat van rv toilet, etc. High-quality Material: Sturdy metal and smooth appearance, the door handle is durable and rust-proof, no need to worry about usage in humid environment for long time. Easy to Use: Easy to open and close in daily life. Smooth surface of door lock will give you a comfortable feel. This door lever lock is not only security set but also home decoration.