Pirastro Korfkerspring ChinrestFirst chinrest to use Pirastros revolutionary and patented spring system Allows precise personal adjustments of position, height, rotation and tilt Six included springs enable height adjustment from 25 to 50 mm in 5 mm increments Enables freedom of movement and upper body tension release Offers exceptional playability, acoustic fidelity and sound projection Crafted from a mere 15 grams of sound optimized high end materials Chin plate shaped from