chain record ultra narrow 10v offers and guarantees silence and fluidity to each ride thanks to the perfect development of the profile of the links. it is a ultraestrecha chain and links with lighter, easy to adjust and wear reduction. the hd-link links lock system provides a high degree of capacity of close links and a greater durability and safety. with links of special steel of 5.9 mm which prolong the service life of the chain and reduce the chainring / sprocket wear. they have been treated with a process of anti-friction ni-ptfe, which reduces friction and makes pedalling is smooth, quiet and efficient. features: -special steel chain. -10 speeds. -width of 5.9 mm. -114 links. -ni-ptfe finish. -ultra drive. -hollow pins. -hd-link chain link lock system. -full weight: 255 gr. aprox.