What is a bass drum hoop?

A bass drum hoop is a circular metal or wooden rim that fits around the edge of a bass drum, providing support and tension for the drum head. The bass drum hoop is typically made of either steel or wood and is usually finished with a lacquer or chrome coating. The hoop is attached to the drum shell with screws or bolts, and it can be adjusted to tension or loosen the drum head. Some bass drum hoops also feature integrated mounting brackets for attaching drum accessories such as toms, cymbals, and cowbells.