Twin Stack BTA BracketA convenient BTA mounting bracket to stack two bottles. Works best with our FastTT Ultra Tall BTA Tower but can be fitted to any standard bottle mount with 65mm bolt centres when adequately elevated. A must have if you want plenty of hydration on the bike leg. Pre threaded holes to stack mount two bottle cages Bracket is CNC precision machined aluminium A high quality product with a superb anodised finish for surface durability Kit contains one