Pulley Set Ultegra RD-6700 Bleed Kits A 12-speed cassette range that

A 12-speed cassette range that brings versatility to any rider or road

Zeiss Anti-Reflective TechnologyAn anti-reflective technology greatly improves the efficiency of the lenses

Lightweight and compact design boosts enjoyment on and off the trail

It’s just what you need for gnarly

Shimano's new 12-speed cassettes are available with two different gearing options — the 10 - 51-tooth Wide Range option

Pulley Set Ultegra RD-6700 Bleed Kits A 12-speed cassette range thatFEATURES Sealed bearing for Tension pulley Ceramic bushing for guide pulley COMPATIBLE MODEL RD 6770 A, RD 6770 SS, RD 6700 A, RD 6600, RD M772 GS, RD M772 SGS, RD M771 GS, RD M771 SGS, RD M770, RD M810 A, RD M810, RD T780 SGS COMPATIBLE SERIES ULTEGRA 6770 Series, ULTEGRA 6700 Series, ULTEGRA 6600 Series, DEORE XT M770 Series, SAINT M810 Series, DEORE XT T780 Series