I used these to replace a pair of limit switches on a 3D printer where a metal arm broke off. These switches were exactly the same size as the old ones and fit the measurements given by the seller. I was able to easily solder wires on without damaging the switch itself and the connectors were lightly pre-tinned. The metal derailleur lever is well secured in the derailleur housing and I don't expect it to be anything like the originals. The delivery was fast, the packaging was in a nice resealable bag.
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