The answer is "Pinky."
Finger-Cuffs
Ring fingers are normally placed on your left hand, 2nd smallest finger. (the one next to your pinky/ smallest finger) There is actually a ring finger on each hand. A wedding or engagement ring is worn on the left.
Three-Finger
finger cuff
Your pinkie Is the smallest finger on your hand
pinky for both
The smallest is called a Marmosett. It's so small it is smaller than your finger.
honeoye
look down or click here 'Three Finger'
It is about the size of your pinkie finger nail.
look down or click here 'Three Finger'
molecules, pinkie finger, the most smallest bull ant