The Stanley FatMax® 30m Closed Case Long Tape has a 9.5mm wide stainless steel blade that resists rusting and has metric only graduations. Its closed case design helps to protect the blade and internal workings and a non-slip rubber grip. The 3-to-1 gear ratio provides 3 times 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.