Pirastro Korfker Viola Shoulder Rest 2The Pirastro KorfkerRest 2 viola shoulder rest is the worlds lightest wood shoulder rest & is designed to offer extensive modifications to suit your personal preferences. Extremely lightweight 40 grams The use of bendable tonewoods allows customization to the shape of your shoulder Position, height and tilt are all adjustable Minimal use of rubber improves sound characteristics ErgoPack included, which allows even more adjustments Optimized rubber