+10% Metric Wire Rope and Sheave Gauge 3.5mm to 20mm (21 Gauges)
21 Stainless steel Blades in 1mm steps, plus 3.5mm, 4.5mm, 5.5mm, 6.5mm
Blade sizes are
3.5,4,4.5,5,5.5,6,6.5,7,8,9,10,11,12,13,14,15,16,17,18,19,20 mm
Sheave Gauge is +10%
Wire rope gauge is nominal
Size clearly engraved on each blade
Stainless steel permanent attachment point