Heavier durable steel blade on this KESON long tape measure won’t stretch and it provides a more accurate measurement than fiberglass blade. Model has an open reel design that can be easily cleaned of dirt and debris so it’s ideal for use in dirty dusty or outdoor environments. Rugged blade axle resists breakage if tape is dropped. Ideal for use in surveying and engineering applications. Long Tape Measure 3/8 In x 200 ft Gray