Komelon 8811 Fast Back Open Reel Long Tape Measure with Double Nylon Coated Fiberglass Blade 100-Feet by 1/2-Inch 100' Fiberglass Tape Rule 2 color printed blade includes white for inch scale, yellow for engineers 3:1 ratio geared fiberglass tape measure provides fast rewind. Fiberglass will not rot, corrode, or distort.