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, and the small opening in the shackle makes tampering with this lock very difficult. Because these disk locks are mainly made of stainless steel, they are especially suitable for applications in which both security and protection against corrosion are required. The 24IB is used to secure bikes, trucks, doors, gates, barns, cellars, sheds, etc. The locks can be retrofitted with an ABUS-Plus disk cylinder which provides the highest protection against picking methods. The cylinder has an integrated cylinder cover for protection against dirt and moisture.