A multi-gauge drill

A multi-gauge drill, comprising a drill bit, an annular cutter body gage, gage hollow drill bit, drill rod, drill heel provided with a ring gage annular cutter body is provided with wings on the knife blade ring gauge rear flutes gage cutting tooth, the annular cutter body is provided with a hollow gauge gage drill, provided with a tubular base body, gage cutting tooth, the linkage portion, the drill bit and the annular hollow knife gauge gauge bit body integrally connected, through the drill pipe, the drill connected with the hollow gauge. Bit, the annular body and the hollow gauge gage tool bit cutting the same diameter. Advantageous Effects of Invention: once completed drilling, the gauge work, reduce the work steps to improve efficiency; new drill avoid losses, extend the life of the drill bit.