SMOOTH, FAST, AND ACCURATE: With Double X Bridge construction, our chains increase shifitng precision and shifting speed and our High Pin Power Riveting solves chain stretch and gives you more miles. INNER & OUTER CHAMFERING: Ramps specifically engineered to engage with your chain rings and cassettes quickly and provide smooth shifting. HIGH-END COATINGS: X8 Chains are available in our EcoProteq and our Hardy Nickel Plate options HIGH PIN POWER RIVETING: Get more miles with our extra strength high-pin-power chains. X-SERIES SPECIFICATIONS: Size: 1/2"x11/128" Length: 116 Link Weight: 286 grams.