Allows the use of Short Pull levers (traditionally drop bar levers) with Long Pull brake calipers (traditionally linear pull or mountain pull disc brakes) - Increases cable travel at a ratio of 1.9:1 - Machined and anodized AL-6061-T6 Allo - Does not work with Servo-Wave brake levers Check my other listings. I will combine shipping! Free local pick up (Seattle, WA), otherwise $5 flat rate USA shipping.