SMOOTH, FAST, AND ACCURATE: With Double X Bridge construction, our chains increase shifitng precision and shifting speed. Compatible with Campagnolo, SRAM, Shimano, and all major 12 Speed Drivetrains INNER & OUTER CHAMFERING: Ramps specifically engineered to engage with your chain rings and cassettes quickly and provide smooth shifting. HIGH PIN POWER RIVETING: Get more miles with our extra strength high-pin-power chains. SPECIFICATIONS: with Titanium-Nitride Coating; Size: 1/2"x11/128" Length: 126 Link Weight: 234 grams, Titan TI-NITRIDE COATING: Titanium nitride is a chemical compound of the elements titanium and nitrogen.The ceramic material is characterised by very high hardness and corrosion resistance. KMC's special Titanium Nitride coating not only looks fantastic, it has an ultra- smooth surface and is extremely durable.