Steel Measuring Tape (such as model HSMT8420 or HSMT8430) is a long-reach manual measuring tool featuring a durable yellow and black rubberized casing, dual metric and inch graduations, and a 3:1 gear ratio mechanism for rapid tape retraction.Blade Dimensions: Available in lengths like 20m or 30m with a standard width of 12.5mm.Fast Rewind: Built-in 3:1 gear ratio for quick, effortless blade winding.Dual Scale: Displays both metric (meters/centimeters) and imperial (inches/feet) units.