These spade drill bits have a flat head with two cutting spurs and produce clean holes at high drilling speeds. They are also called paddle bits. These bits feature a quick-change hex shank and can be inserted and removed from the drill chuck without the use of tools, allowing the bits to be changed out faster and more efficiently than bits with a standard hex shank.

Spade drill bit sets contain multiple bits in different sizes. Spade drill bits create large, clean holes faster than standard twist drill bits and are often used in construction and maintenance applications to drill shallow holes for running wires and pipes. They install into handheld drills.

Adjustable-size spade drill bits feature flat blades that can be adjusted to make the drill bits wider or narrower, which allows one bit to create more than one hole size. Also known as expansive wood drill bits, they have a screw that is tightened to lock the blades in place once they have been adjusted to the desired width. These bits have a flat blade with two cutting spurs and produce clean holes at high drilling speeds.