The key to Arundel's Tri Clamp is the use of a "V-block" design with convex internal surfaces. This helps it adapt to a variety of seatposts, whether round or aerodynamic. The Tri Clamp stays securely attached and bottles are easy to reach. Plus, it's affordable.

  • Weight: 117 grams without cages
  • Hardware included for round or aero post
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