Shimano, CN-HG40, Chain, Speed: 6/7/8, 7.3mm, Links: 116, Grey

HG technology has chamfered inner plates to optimise shifting performance on HG sprockets
Durability is assured through the heat treatment of rollers, pins, and plates
Includes connecting link

The HG-40 chain is designed for precise index shifting on 6, 7, and 8-speed HYPERDRIVE SIS and DUAL SIS drivetrains. 
Weight: 335 grams