What is an SDS drill bit and how is it different from other types of drill bits?

An SDS drill bit is a type of drill bit that is designed for use with SDS drills, which are power tools commonly used for drilling into concrete and masonry. The main difference between SDS drill bits and other types of drill bits is that SDS drill bits have a special shank design that allows them to be quickly and securely inserted into the chuck of an SDS drill without the need for tightening or loosening a chuck key. This makes them more convenient and efficient for heavy-duty drilling tasks.