Ambidextrous bi-directional rotation makes it easy for both right and left handed users
You can also change the direction of the rotation during rotation without turning off the power for smooth operation.
[Size] Control box: (approx.) W 3.0 x H 6.1 x D 1.5 inches (77 x 154 x 39 mm); Handpiece: Size (approx.) Length 5.4 x Diameter 1.1 inches (137 x 2