The Shimano Sora BL-R3000 Dual Pivot Brake Lever Set is designed to work with a variety of brake calipers.This flat bar brake lever is designed to work flawlessly with the SL-R3000 shifter and works with cantilever brakes, caliper brakes, mechanical disc brakes, and V-brakesShimano Reach Adjust mechanism means the lever can be adjusted for any hand size, type of riding and individual rider preferences2.5 finger lever22.2mm clamp band