Hey there,
as much as I love my LBS, I do most of my own work, and I really hate to go in sounding clueless. My chain needs to be replaced soon, but I'm not sure what sort of digits, codes etc. I need to tell them. Are all chains the same size/type? I'm just learning things one part at a time, and I've yet to replace my chain. I don't have a chain tool yet (its shimano), so removing the chain and asking for a duplicate won't work. Any tips?