Holes may be drilled for a "conventional" grip (fingers inserted to the second knuckle as with "house balls"), a "fingertip" grip (fingers inserted only to the first knuckle, enabling greater rev-generating torque), or less standard grips such as the "Sarge Easter" grip (ring finger inserted to the second knuckle but middle finger inserted only to the first knuckle). Many bowlers using the so-called "two-handed delivery" (which is still a "one"-handed "release") do not insert their thumbs, thus allowing their fingers to impart even more torque than the fingertip grip.