V VII New member Jun 16, 2009 #1 I have a univega 12 speed and was wondering what cone wrench size I should use for my back wheel. I hear that 15 mm is the standard size for most nuts on a bicycle.
I have a univega 12 speed and was wondering what cone wrench size I should use for my back wheel. I hear that 15 mm is the standard size for most nuts on a bicycle.