The spade/gouge bit is a drill bit you can use for through-holes or making countersinks. It leaves a really smooth and clean finish. The bit's spike tip is super short, which lets you make almost flat-bottomed countersinks. It gets its name from its traditional use: drilling out knots from pieces of wood, but these days it's used for all sorts of other stuff too. For through-holes or making countersinks Made from hardened steel Sizes: 15, 25, and 35 mm In a wooden storage case