These Faithfull punches are made from uniformly heat treated carbon steel and are used for removing pins in parallel holes. The removal of the pins should first be started with a hand or taper punch to avoid damage to the end of the parallel punch. The set of eight punches include one of each of the following. 1.5mm , 2.5mm , 3.0mm , 4.0mm , 5.0 mm , 5.5mm , 6.0mm and 8mm. Length: 100mm (4 in).