sorry if this isn't what you wanted, but isn't it better to get new nuts and a better spanner? one of those ones that fits all the way around the bolt is what i have, and i can get decent enough chain tension without stripping the sides of the nuts at all.
EDIT: and kevlar tyres to avoid the punctures? ;-)
sorry if this isn't what you wanted, but isn't it better to get new nuts and a better spanner? one of those ones that fits all the way around the bolt is what i have, and i can get decent enough chain tension without stripping the sides of the nuts at all.
EDIT: and kevlar tyres to avoid the punctures? ;-)