Bubble tea is popular in the US, at least in the more populated coastal region of the mid-atlantic where I live. My 13 year old, Jake, is especially fond of the taro flavor bubble tea they serve at the local sushi restaurant!
They have a shoulder and are smaller. The only screws I've seen with a sharp point. No clue where they came from.
I did ultrasonic my oscillator bridge but the jewel cap screws are still on it. Plus, there are 3 of them???