Pointy spark plugs?

[Solace87]

First off, I apologize if this is a stupid question but when I took out the plugs in my echo to have a look at them (previous owner didnt know the last time they were changed) I wanted to check because the car has a tiny tiny almost unnoticeable vibration at idle. I figure this just may be what tiny four bangers do, never had one but it is definitely acceptable and unnoticeable with an music on.

Well anyway, I took them out and they were pointy? like the spark cap/tip was pointed like a spike. I have never seen this before and bought many types of NGK plugs.

Is this normal for this car?

[RningOnFumes]

How many miles?
Got pics or what's the part number on the plug. Google it and compare.

[Solace87]

12k miles on the plugs, they were some type of NGK. I did a bit of research and it seems it is normal for plugs for small engines. It runs fine except a tiny shake like I said. Think that is just normal.