The Stanley FatMax Closed Case Long Tape has a 10mm wide stainless steel blade that resists rusting. Its closed case design helps to protect the blade and internal workings and has a non-slip rubber grip. The 31 gear ratio provides 3x faster rewind and a steel roller cage protects the case from being cut by the blade during retraction. There is also a corrosion resistant Tru-zero folding end hook for accurate measurements. Available with metric only or both metric and imperial measurements. The Stanley FatMax Closed Case Steel Long Tape has metric graduations only. Blade Length 20m Blade Width 10mm Accuracy EC Class II