A new hand instrument, having numerous ultrasonic uses, and operated in the 25 kc/sec range, will be described and shown. This device is entirely portable and features a light weight hand‐piece, which permits quick change of the transducer insert elements, without conventional mechanical attachments. The small electronic generator is of a new type and is semi‐automatic insofar as frequency selection and control are concerned. The operating characteristics of this instrument will be described. Special emphasis will be given to the vibratory properties of the transducer which is utilized to produce simultaneously controlled longitudinal and flexural vibrations. This results in a variety of motions at the instrument's operating end. Practical design considerations led also to a new transmission line for connecting the magnetostrictive transducer to the operative output elements. An elementary coupling theory for the flexual and longitudinal vibrations will be presented in order to account for the elliptical mechanical motions achieved in practice.