The new Super Record wireless cassettes have been conceived, studied and designed to cyclists the smoothest shifting across the range of combinations. That´s why closer jumps are key to the pedaling experience of all cyclists, always ensuring a perfect cadence in every situation. The three new 10-25, 10-27 and 10-29 cassettes embody excellence in the quest for performance, lightness and durability.Features:- N3W- Perfect cadence- The Super Record WRL new gear combinations enable fast up and down shifts, with an extremely smooth fluid gear ratio, to ensure a constant cadence in every situation.- Resistant to wear- Thanks to the use of special steel and processes with minimal tolerancesSpecifications:- Material: Steel/Titanium- Position on the bike: Rear- Teeth: 10-25- Number of gears: 12