P&H 4/4 Size Master Class Carbon Fiber Violin Bow 4/4 Size 4/4 Size Master Class Carbon Fiber Violin Bow 4/4 Size Based on the ground-breaking re-hair technology developed for their fiberglass bow, the P&H 4/4 Size Master Class Carbon Fiber Violin Bow is a sure-fire upgrade for the advancing string player Made with a well-balanced carbon fiber stick, the bow features faux whalebone lapping and leatherette grip (Replacement hair hanks available separately) Based on the ground-breaking re-hair technology developed for their fiberglass bow, the P&H 4/4 Size Master Class Carbon Fiber Violin Bow is a sure-fire upgrade for the advancing string player