Destined to become a classic! The Master Mechanic spoke wrench is an investment cast workhorse poured from the best steel&44; precisely machined&44; heat treated for hardness then polished & plated The result is a smooth&44; solid steel spoke wrench designed & built to fit perfectly in your hand & provide years of every day service A classic&44; & maybe your new favourite tool! Black is for 80 gauge / 0.127 inches / 3.23 mm Red is for 80 gauge / 0.136 inches / 3.45 mm