Logic axis bars have taken over 1 year to design and test in order to bring you one of the lightest and strongest aluminium bars on the marketour unique design uses individual aluminium tubes to form incredibly light but strong support gussets connected to extra thick crossbar and down tube to give you the most possible strength while keeping the weight down24 x 24scs no slitinternal diameter 281mm standard sizedexternal diameter 349mmweight 790 grams