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. A 4 piece set is available and contains: 3, 4, 5 and 6mm. A 8 piece set is also available and contains: 1.5, 2.5, 3, 4, 5, 5.5, 6 and 8mm.Length: 100mm (4 in)Tip diameter: 2.5mm (3/32 in)