This is a KMC Z8.1 chain for 8-speed drivetrains. Rustbuster technology helps prevent corrosion in the most unforgiving of environmental conditions - if you cycle in the winter in an area where the roads are salted, you should absolutely invest in one of these.
Link size: 1/2"x3/32"
Compatibility: All other 8-speed drivetrains - 1x8, 2x8, 3x8