Prime Noosa Riser KitAllowing you to find your ideal handlebar height, this riser kit allows for 20mm, 40mm or 60mm of height adjustability for your Prime Noosa TT Aero handlebar. 60mm stack height needs the additional span to secure the setup, so you can enjoy superior comfort and control as you clock up the miles. Featuring an immensely tough, forged, and machined alloy body construction, this model is great at handling all the challenges that come with a long day out on the road. Prime has also equipped this version which marine grade steel bolts, so you can enjoy a stable and secure hold on every ride.Features: Body Material: Forged and machined Alloy Bolt Material: Marine grade Steel Use: TT Compatibility: Prime Noosa TT Aero Handlebar Includes: One riser block and all necessary boltsBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.