- Color: Black + Grey<br>- Tension: 7 pounds (for adults)<br>- Strengthen and stretch the fingers<br>- Unique ergonomic design allows you to exercise the fingers, wrists and forearms while practicing the correct action for playing musical instruments<br>- Increases finger speed, strength and independence<br>- The span between fingers can be extended and strengthened by progressively shifting the fourth button away from the others<br>- Compact &amp; ultra-light, can practice without instrument anywhere &amp; anytime<br><br>                                                                                                                                Dimensions: 3.35 in x 2.76 in x 0.79 in (8.5 cm x 7.0 cm x 2.0 cm)<br />Weight: 2.36 oz (67 g)<br /><br />