THESE TUBES HAVE A LENGTH OF 300mm & AN OVERALL LENGTH OF 320mm WITH BAR END. THESE ARE 30mm LONGER THAN OUR STANDARD CLIP ON TUBES, FOR THOSE WHO WANT A BIT MORE LEVERAGE. THE TUBE IS HOLLOW THROUGH THE MIDDLE WHICH ADDS TO THE WEIGHT SAVING BUT DOESN'T COMPROMISE DURABILITY WITH A 3.40mm WALL THICKNESS.