The inner components are made from non-corrosive materials. The precision pin cylinder has mushroom counter pins with the paracentric key-way offering greater protection against manipulation. Automatic locking mechanism. Sizes 20-25mm are ideal for securing valuables / goods of lesser value or at a low risk of theft. Such as bags, suitcases, jewellery boxes, cash boxes, etc. Sizes 30-60mm are ideal for securing valuables / goods of medium value or at an average risk of theft. Such as chains, doors, gates, cupboards, lockers, toolboxes, cellar windows, sheds, switchboards, etc.About Abus: Since 1924, Abus provides the good feeling of security worldwide. As a German quality manufacturer, they ensure that their products are highly reliable and offer a long service life while being easy to operate. In order to meet the growing requirements of private and commercial users, Abus provides a large product range of innovative security solutions in the areas of security at home, mobile security and commercial security. ABUS - Security Tech Germany!