The Bossard BN635 is a spring-loaded, ball-locking device that is used for holding objects firmly in place. The unique design of the device allows for a wide range of uses, from securing doors, securing windows and shutters, attaching awnings and shades, and attaching shelves and other items. The device can be used in a variety of materials such as wood, metal, and plastic, and also comes in a wide range of lengths and diameters. It is made from high-grade steel and has a strong, corrosion-resistant protective finish that makes it highly durable. The device also offers a good holding force, so it is suitable for items that require high retention.