A disc lock is a type of padlock designed to secure items like bicycles, motorcycles, and trailers. It features a circular body and a locking mechanism that fits into a slot on the item being secured. The design makes it difficult for thieves to cut or pry open, providing a higher level of security. These locks are often made from hardened steel, which adds to their durability. Many disc locks also come with a key or combination mechanism for unlocking. Some models include additional features, such as alarms, to further deter theft and enhance security for valuable possessions.