The commuting bike I'm intending to buy has a 7-speed cassette and double chainrings. I have a multi-tool on my shopping list, but the tool I was thinking about buying specifies it's for 8/9 speed chain.
(I have one of these that I carry on my Surly LHT.)
Ignorant me, I guess, but I didn't know there was a difference.
Can someone please explain about bicycle chain sizes?
What multi-tool or chain tool should I buy for a 7-speed chain?