HTS 102E7 18 Pc Brass & Carbon Steel Punch Set With Automatic Center Punch Eight 3 1/2" long brass punches: 1/16", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16" Eight 4" long hardened steel punches: 1/16", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16" Steel and brass punches have a 5/16" diameter hex shaft body and an approximately 1" long head 5" adjustable tension Swiss style automatic brass center punch with hardened steel tip Includes a vinyl pouch for easy storage