The Original Japanese Screw Punch. The brass chuck holds one of the 7 drill bits supplied with the Punch. Pressure exerted downwards, causes the bit to spin, drilling through paper and board without 'snagging'. Excellent for drilling through paper, leather, board, etc.
The drill comes with 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, and 4.0mm bits
