Mark of course you are right. But I never used them, in fact don't remember even seeing them, I use to race hill climbs brakeless. but climbed using the drops only, I did have a few mates that on club rides with single fixed used an extra brake lever taped up. no cables or calipher.to grab on when climbing love to see a photo of the buttons! Cheers John Crump OldgonebonkerBrit, Parker,Co USA