Components: Includes 12 hole saw blades ranging from 19mm (\(3/4"\)) to 127mm (\(5"\)), two mandrels with pilot drills, a drive plate, and a hex key. Best Use: Ideal for woodworking, drywall, plaster, and plastic up to 25mm (\(1"\)) thick. Key Features: Designed to cut smooth, clean, and accurate holes. Material: Generally made from carbon steel.