Profile Design Air Stryke clip-on aero bars feature spring-loaded armrests, 115mm of bar length adjustment and flip-up ZB brackets.115mm of bar length adjustment, flip-up ZB bracketsSpring-loaded armrestsItem SpecificationsColorBlackWeight655gMaterial6061-T6Aero Bar/Cross Lever Diameter31.7/31.8,26.0Aero Bar Length280/160mmDefined ColorBlack