Fangrui Product Details A Long-time Favorite Of Students And Professionals, This Violin Shoulder Rest Provides A Firm Yet Comfortable Frame, With Dense Padding For Comfort And Stability It Features Simplified End Member Mechanisms, Which Allow For Very Fine Adjustments This Violin Shoulder Rest Is Strong, Durable, And Fully Adjustable,the Comfortable Violin Shoulder Rest Will Be A Good Assistant For Your Performance With This Violin Shoulder Rest, You Shoulder Will Feel Tired Or Painful During The Practice This Violin Shoulder Rest Has A Fine Workmanship,fully Adjustable For Both Height And Angle. Specifications: 1. Color: Black 2. Weight: 3.10 Oz 3. Compatible With: 3/4 And 4/4 Size Violin Material: Plastic Package Included: 1 X Violin Shoulder Rest Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/-1-3cm.