Shimano ultegra 6700 road brake caliperdual pivot caliper brake with super slr design for quick linear response increased rigidity and improved braking power featuresmust be used in conjunction with st 7900 or st 6700 stis for correct leverage ratioenhanced brake arch proportions give a quicker linear response and increased powerlow profile outer cable stop position improves cable routing for reduced frictionbrake shoe compound produces 100 more stopping power in wet conditions than the previ