A cylindrical drum with no snare, commonly found in modern drum kits.

As major drum manufacturers began to offer tunable tom-toms with hoops and tuning lugs, a 12 in (30 cm) drum 8 inches (20 cm) deep became standard, mounted on the left side of the bass drum. Later a 16 in (41 cm) drum (16 inches deep) mounted on three legs (a floor tom) was added. Finally, a second drum was mounted on the right of the bass drum, a 13 in (33 cm) diameter drum 9 inches (23 cm) deep. Together with a 14 in (36 cm) snare drum and a bass drum of varying size, these three made up the standard kit of five drums for most of the second half of the 20th century.

Later, the mounted tom-toms, known as hanging toms or rack toms, were deepened by one inch each, these sizes being called power toms.