1. Integrates scissor-style cable stop low profile design, specifically for underneath bottom bracket placement. 2. Two-bolt locked mounting design keeps the bolts on the caliper. 3. scissor-actuated for uncompromising performance. 4. Four springs adjustment mechanism establish personal best brake. 5. Independent arm adjustment compensate pad wear and satisfy modern wide rim widths suits 21mm-28mm. 6.Weight: 180g.