Review on RINHOO 2 - Pack of 100 Butterfly Surprise Birthday Accessories by Ryan Rodriguez

The supplied rubber bands are bad and brittle. They just fell to the ground. It was a bit tight at 50rpm, I got to the full 60rpm as instructed in the instructions and the bands broke. I replaced them with a regular office rubber band folded in half. It flew MUCH better. It might feel tight at 40-50 rpm, but you still need it. It also works with a third elastic, the same as those included in the kit. I would find another one of these ads to add.