* Fits 30.0mm seat tube* Green anodize 7075-T6 Aluminum textured finish* CNC machined* Chrome binder bolt 30.0mm is a common clamp size for steel frames, but not all steel frames. Measure the outer diameter of your frames seat tube to make sure this is the right fit. -----------------------------------------------------------------------------USA SELLER - DELIVERED IN DAYS, NOT WEEKS.FREE US Shipping - 50 states, Puerto Rico, all US Territories, military address & the Republic of Palau.