These little conga shakers are sold in a three pack and are designed to throw out to members of the band that want to hang and jam along when they have no parts to play. They are loud enough (white and blue) that they won't ruin any rhythm section that you have going on, but not too soft that they can't be heard.
The red shaker is extra loud and really ideal for a live scenario, throw one out to anyone in brass section and they can accompany any parts they are not playing, and even though it is little, the little red one we will be heard against a backline.
Great price, solid build, and they have a slightly better shape to hold than an egg shaker. Not ideal for recording, better to go for a full percussion shaker than an egg or conga shaker.
Great product.