1. Titanium coated chain is more wear-resistant, higher hardness and strength, and strong corrosion resistance. 2. Each part of the chain is heat treated in a unified manner to strengthen rigidity and strength for increased durability. 3. The hollow mud drain hole design reduces weight, reduces dirt buildup, and is easier to clean. 4. Quickly catch the gear shift action, catching the chain point is faster, the gear between the teeth is more stable, and the ride is smoother. 5. The chain comes with chain links that can be quickly installed without tools and is safer to install with tools. Item Type: 9-Speed Chain Material: Carbon Steel Color: Gold Length: Approx. 147 cm/57,9 inch Weight: Approx. 308,0 g/10,9 oz Links: 116 links Specification: 1/2inx11/128in Maximum tensile load: 1800 (KN) Speed: 9-speed (half hollow) Application: mountain bike, road bike List of packages: 1 x 9 chain speeds 2 x Chain Links Fits to Campagnolo/Sarm and other 9-speed drive system How to choose the right chain: First, observe the number of flywheels on the bike, choose a chain with as many speeds as there are flywheels How to confirm chain length: Method 1: Choose the same length as the original bicycle chain. Method 2: All chains are suspended on the flywheel and the largest sprocket of the front disc, stretched, and the length of the stretched will be increased by 2-4 knots.