The ABUS Diskus® lock is a special kind of padlock with some distinct advantages. The disk shape itself effectively combats the most common ways of forcing it open. The design with only a small opening in the shackle makes it very difficult to tamper with. As these disk locks are mainly made of stainless steel, they are used especially where both security and protection against corrosion are required. The 20 lock is used to secure trucks, vans, doors, gates, barns, cellars, etc. The lock can be retrofitted with an ABUS-Plus disk cylinder which provides highest protection against intelligent opening methods. For protection against dirt and moisture the cylinder has an integrated cylinder cover. The Code Card that comes with the lock can be used for producing extra keys at a local lock shop.