Arx is Latin for stronghold and bridge. The perfect connection between fork and handlebar with an optimized the clamp design. Steerers and handlebars made of composites can easily be compromised by poor clamp design. To assure the integrity of the Arx clamp interface 3T performs their own tests that go way beyond the demands of CEN standards. Also tested is compatibility with other brands of handlebars and it passed with flying colors. Arx Pro is made of AL 2010 and has stainless-steel bolts. The material’s grain structure is aligned for optimal strength. 110 grams. Shot Peened and Black Anodized. 70, 80, 90, 100, 110, 120, 130 or 140mm. 17-degree angle.