The Shimano Tiagra 4601 10 Speed Chain is a super narrow lightweight 10-speed HG design chain for smooth shifts & maximum durability. The inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity & near silent running. This chain has a total width of 5.62mm, optimised for 10-speed Super Narrow HG drivetrains to give its full potential.