HTS 102F6 8 Pc Brass & Steel Pin Punch Set Set includes 4 brass and 4 hardened steel punches: 1.7mm, 2.5mm, 3mm, & 4mm Punches have an 8mm diameter & an approximately 25mm long head Diamond pattern knurled handles give excellent, consistent grip even with oily hands Set includes a cylindrical plastic storage container Each punch is approximately 3.25" / 83mm in length