Removing the olde rings from you multi geared ride is one thing, mounting that single ring in just the right place is another.
The bolts removed from the crank arms of an 8 or 9 speed set will be too long for use with a new single ring. These bolts were designed to accommodate 2 chain rings and a Spider. That is where these bolts come in...Price is for ONE Set (1Bolt and 1Nut) CR-MO M8-0.75x6.5 No Retail Packaging.
NOTE: Priced PER bolt/nut set. Be sure to order one for each hole, maybe even more if you're clumsy!