This is the electric nail file with a patented oscillating head that makes manicures easier and less painful for those with arthritis or other hand ailments. Unlike standard electric nail files that rapidly spin in one direction, generating intense heat and requiring more manual dexterity, this superior model shapes, smooths, buffs, and shines nails without excessive friction or constant twisting of your fingers and wrists. The cordless wand provides salon-quality manicures (and pedicures) in the comfort of your own home and operates at two different speeds. Includes four interchangeable heads (shaping disc, smoothing disc, buffing disc, shining disc). Charges via USB or AC. 7 1/2" L.