Compatible with all spoke nipples including the modern Shimano versions used on their own complete wheels. When used with a Birzman 5mm Hex Key this unique Birzman design let’s the mechanic use the tool in three way to customise the leverage and maximise control at every stage of a wheel build. Perfect for maintenance the tool is precision made for a tight tolerance to avoid rounding. Compatible for 12G 13G 14G 15G and Shimano 4.3/4.4mm