Flexes Thumb Touches Intersection of Frog and Stick: A bent yet flexible thumb is key to tone production. This accessory directs the inside corner of the thumb tip to make contact with the bow at the intersection of the frog and stick, at a 45 degree angle to the bow stick. This position, with a bent and flexible thumb, allows the player the options to exert upward pressure to the stick and/or pushing against the frog on down bows to get toward the tip of the bow. | Supports Curved Pinky: A curved yet flexible pinky finger is critical to bow control, tone production and a relaxed bow arm overall. The pinky finger correctly approaches the stick from slightly to the rear, positioning the finger tip so the finger can remain curved and flexible without sliding off the front of the stick. This allows the player to easily move the bow to play at the frog, and to counter balance the weight of the tip of the bow while playing in the lower half of the bow. | Positions index finger to rest on bow: A correctly positioned index finger is key to bow control and tone production. This accessory ensures the index finger's contact with the bow stick will be between the first and second knuckles. This allow the finger to control downward pressure on the bow stick, as well as the pull on the front of the stick to control the straightness of the bow stroke. | Fingers Contact Bow in Customary Places: The empty spaces around the fingers of a correct bow hold tempt even the best beginners' fingers to wander without support. The fingers of the bow while using this patented accessory set are exactly in the same correct position as they will be when the accessory is no longer used. While the accessory set passively teaches the essential skill of the bow hold, students can proceed to learn and experience the many other skills and rewards of playing music. | Adjustable, Universal Fit -- for child to adult hand sizes: The thumb/index finger stabilizer (designed to look like a frog) is installed on the bow and intended to remain in a fixed position, while the Hold Fish is designed to slide along the bow stick to come to rest next to the ring finger. This positions the pinky finger correctly in the Hold Fish. As long as the child or adult player is playing approximately the correctly sized bow, the resulting bow hold will be correct.