Rhythm Tech Congas have a full, round bass and a crisp, sharp slap! These drums are designed so that no two side-plate mounting bolts align with the same grain of wood. This design balances the stress on the shell, making the congas sound better and stay in tune longer. Additionally, the heads do not come in contact with the sides of the shell, allowing them to vibrate more freely with a loud, full tone. These congas feature low-profile over-sized curved rims.