Just right!  However it would NOT stay closed. This size is VERY TINY and 20 gauge is the thickness of a normal ear pierce, so the ring is capable of going around and around in the pierce. The card that came with this piece said to contact Amazon and they would replace with no need to return if it was too small.  That didn't happen as Amazon wanted the defected piece returned.  It will be picked up free of charge by UPS tomorrow, compliments of Amazon. Won't order again because of the hassle.
UPDATE:  I had this in for approx 15 min. It has been over an hour since removed and my piercing is itching and red and hot to the touch.  A reaction that I haven't experienced in over 20 years.