Oster Stim-U-Lax Professional Massager 's exclusive Suspended Motor Action combines the advantages of hand and mechanical massage. The construction allows the Oster Massager motor to shift its weight up, down and from side to side with such speed that it delivers several thousand rotating-patting massage movements per minute to your fingertips. To use the Oster Stim-U-Lax Professional Massager place all four fingers under the large strap. Slide the two middle fingers under the small strap. Push the Oster Massager far back on your hand. This position is important for good massage. It gives your fingers the most freedom and permits the instrument to deliver its very best massage action.