This versatile 10 speed chain features a variety of performance-enhancing technologies & strengthening features that make it one of the most durable available on the market. KMC has equipped it with a non-directional design, which makes it independent of direction & allows for maximum compatibility on MTB or road bikes. Thanks to its unique stretch-proof treatment, this model's robustness has been enhanced massively by reducing the attrition between the inner plates & pin. The final result is its chain life has been significantly prolonged. Another benefit of this model is its upper bridge forms a slant vault parallel to the tip of the tooth movement. This vault shape makes the tooth & chain engage much more precisely.