Baomain Mouting hole size 11mm 0.4‘’ On-Off Two Terminals Keyswitch Keylock Switch with Keys Pack of 2

I needed a small key lock and these fit the bill perfectly. They are quite tiny, but they have a nice smooth action. They should not be considered "high security" (pretty sure they are all keyed the same), but for something where you just need a tamper resistant on/off switch they work great.

Smaller than I expected but still works well

The key switch shipped out and arrived on time.This switch is tiny and very cheaply made.You don't need a key for other switch.You can turn it with a screw driver or nail file.I tried one out and it wouldn't work unless you wiggle the key.The second one worked, but I wouldn't use.I already ordered a different one.I would not recommend this at all.

Very small

My mistake I guess but I thought this would fit in a normal size hole for a lock. It’s a mini switch and is not usable to me.

Works as it should. Small size is what I was needing. All locks come with two keys and one key fits all. So if you order ten locks, all 20 keys will open all ten locks. So one key fits all! If this is not what you want you should purchase a different lock. This is an electronic switch. It’s not typically used for security. Think of it as a safety switch.

replaced the power switch on my invalid scooter. Works as expected

It's a fairly low quality piece. For instance, if you put the key in the slot and put the tiniest amount of pressure on the key (not rotating, just slightly pushing the key inward), you can hear the mechanism engage. As such, I'm pretty sure you could push hard enough on it with your finger to get it to engage.Also, it's pretty small. The head of the keys are probably the size of a dime.