MACK 30 SERIES Squirrel Hair DAGGER STRIPER PINSTRIPING BRUSHES: SET OF 3 BRUSHES Part#'s 30-1, 30-0, 30-00 SIZE: 1 HEAD WIDTH(INCHES/MM): 5/16" / 7.93mm SIZE: 0 HEAD WIDTH(INCHES/MM): 1/4" / 6.35mm SIZE: 00 HEAD WIDTH(INCHES/MM): 7/32" / 5.55mm 30 Series - Squirrel Hair SWORD Stripers (The 30 series is made in sizes 00, 0, 0, 1, 2, 3, 4, 5)