New in box. Clamp diameter is 31.8, but shims for 26.0 diameter bar are included! Tektro RL721 Cross Levers for 31.8mm OD Bar feature an ergonomic lever design with reach adjustment and return spring.Hinged clamp styleFor use with caliper or canti brakesErgonomic lever designBrake Lever Actuation: Short PullWeight: 100 gAero Bar/Cross Lever Diameter: 31.7/31.8/26.0Sold as a pair