The park sw72 triple spoke wrench is compatible with the 3 most popular spoke nipple sizes on the market fitting 323mm 330mm and 345mm sizes increased durability gives you years of service thanks to the nickel plated steel and the more rounded smoother shape means it will fit comfortably in your hand this park spoke wrench is perfectly designed for the home mechanic park tool sw 72 triple spoke wrench updated with a more rounded smoother shape made from nickel plated