JET 404153 - Nibbler-Up Stroke Type-Heavy DutyPowerful .4 horsepower air motor for professional useCuts on the up stroke for reduced punch breakageSmall diameter cutting head permits nibbler to be started away from the edge of a work piece by drilling a 9/16-Inch holePosition of the cutting head can be set to allow cutting in four directions, forward, reverse, right or leftNibbler cuts maximum steel thickness: regular steel 1.2 mm, aluminum 1.6 mm, stainless steel 0.8 mm