Park tool master 3 sided spoke wrenchthe master spoke wrench is an investment cast tool poured from the best steel precisely machined heat treated for hardness then polished and plated the result is a smooth solid perfectly balanced steel spoke wrench designed and built to fit perfectly in your hand and provide years of every day service features sized for 127 3 23mm nipples same size as the sw 0 black three sided spoke wrench weight39gbuypark tool workshopfrom chain reaction c