These have fully replaced the Shimano index shifters on my bike, and I’ve went ahead and bought a second pair to have as backups, great option if you’re friction-curious but wanna spend as little as possible trying things out.
The shifters do have a clicking mechanism (not technically a ratchet per se, but functionally works the same way as a ratchet would) which makes shifting feel very tactile and precise, my only complaint would be the shifters are a little bulky, but they cost 1/4 as much as the pretty friction shifters so it’s not really worth considering.

Meh. I always say, “It isn’t easy being cheap” and these prove it.

First shifter install: spent 10 minutes looking on the floor for a nut that wasn’t there. Next 5 minutes spent studying the product picture and seeing there was indeed no nut. Then spent 20 minutes hunting for a nut that kinda fit. I had to bend the clamp in unnatural ways to get it to “work” while scratching my handlebar. Then spent 10 minutes wondering if it was worth the effort to return them. Spent final 15 minutes reading all the questions and comments and discovered the bolt needed to be flipped.

Second shifter install: 1 minute flat, super easy with no scratches.

I suggest adding a comment to flip the bolt in the description on the product page were it is easily visible.

It was so much fun to get these and put them on a beater bike. After a month, the one for the front derailleur busted, so I can't shift to the larger gear on the 2x; when I move the lever, it just moves the entire mechanism so it's all swiveling in the housing. For the rear shifting is still okay, but I find that it sometimes moves itself into smaller gears if I'm doing a bit of a climb.

For $14, I'm not complaining, and it's not worth the effort and expense in shipping to goof around with a return. But I'm definitely eyeing more robust friction shifters from here.

Very easy to install and they work great on my 1x7 townie.

Downgraded review because I managed to break one of the shifters by forcing the lever.