Blackburn Mfg. Co. has been the Worlds leading Manufacturer of quality Irrigation Flags for over 60 years. Our flags may be custom printed with your company name, phone number, web site, or anything you wish to have printed on the flags. Blackburn is also the leading distributor for Krylon Inverted Tip Marking Paint, in the Water Base or Solvent Base. We also offer all of the Underground Warning Tapes. Please visit www.blackburnflag.com and take a look at what all we offer.