Squirrel Daddy Hollow End Steel Starter Punch Set Great addition to your tool box and will store easily next to a brass hammer Professional grade starter punch has a precision tip for holding / starting roll pins Non- impact made in the USA from American melt steel 4 pc hollow end starter punch set, hollow tip sizes are 1/8 5/32 3/16 7/32 wiil work with inch and metric pins 3" overall length is longer than competitive punches, many uses and can be used for gunsmithing