Komelon's open reel fiberglass tapes are perfect for all of your long measuring needs. The double coated fiberglass blade is waterproof and dirt resistant. The coating also protects the markings and graduations from chemical and mechanical abrasion. In addition to a heavy duty abs frame, this tape has a two color blade with double sided printing (engineer scale on back of blade) and a versatile ring end hook and claw. The 6633 is great on any jobsite or athletic field.