Having trouble making a stable bridge? Need to show someone how to make one? The Sterling Finger Bridge is a great training tool for you. This innovative device fits on the thumb like a ring and provides a perfect "v" groove when the hand is brought together and placed on the table. The Finger Bridge quickly shows beginners what a proper bridge feels like and increases the learning curve. Also great for those who have trouble forming a good bridge otherwise. The top swivels to assist in aiming. Otherwise this is a great toy to paly with when you are nervous and need something small to twiddle with.