5
The other two reviews are inaccurate. Not only do instructions get emailed to you, if you need them you may want to stop trying to modify your bike yourself.
1.5mm allen wrench shoved into the hole after finger tightening, and you're making tea with the wife. On the Street Twin, you may need to remove the bolt holding your brake reservoir, and hold it upright while you add your shiny new bolt.
It's not rocket surgery...
Looks great. Cleans it up nicely.