= CN-HG40 and hHG71, 6/7/8 speed, 116 links with a one use quick link, 324 grams, made in Taiwan

--Basic, cheap, but good chain for any 6, 7, or 8 speed drivetrain.

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= CN-HG53, 9 Speed, 116 links with a connect pin, 299 grams

--No-nonsense, not fancy Shimano 9s chain for those who insist on having a full Shimano drivetrain.

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= CN-H93 (XTR), 9 speed, 116 links with a connect pin, 299 grams, made in Japan

--Shimano's best 9 speed chain, been in production for several decades.

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= CN-E6070-9, 9 speed, 138 links with a connect pin, 276 grams, made in Japan

--Lots longer than regular chains makes this perfect for long chainstay Rivs, and extra strong since they're designed for e-bikes.

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= SM-UG51 quick link for 6/7/8 speed Shimano chains

--2 quick links, single use