Rototoms produce excellent Latin percussion sounds along with the timbre of timpani, but with their own distinctive tone. Rototoms do not have a traditional drum shell. Instead, the drumhead and counterhoop are mounted on an aluminium frame (spoke) through which the tension rods are attached to a bottom frame which is mounted on a threaded center bolt. Rotating the frame raises or lowers the tension, thus raising or lowering the pitch of the drum.