I ordered this 3L drive belt package to replace the belt on my new Porter Cable drill press. I had about 10" left after the installation. The instillation took all of about ten minutes. It made a world of difference in the smoothness of this drill press. It came with very cheap belts that had bumps at the joints. I have used these drive belts before and felt sure they would be the way to go. Every belt driven machine should have these belts!
Update February 2014 I ordered a second package to upgrade the belt on my old Craftsman drill press. What a difference! Easy to change and super smooth operation.