Features: - MAD drill bit - Daimeter: 20.0mm - Shank: 3 flattened sides Application: A MAD bit is referred to as a Multi Angle Drill bit. The drill bit is designed to cut smoothly in all directions. It allows you to have full control of the cutting path, thanks to its ingenious geometry. Multi Angle Drill bits can cut in a curve or straight. It works great for decking, floor boards, stair cases or even if you want to build your own pergola. It is an addition to any woodworking project. It also gives the professional user the unique capability to rectify misalignment errors. The drill bit is coated with Titanium nitride to add longer life to the cutting edges. What's in the box 1x Mad Multi Angle Drill 20mm Wood Bore Bit