Fangrui Product Details Performance In Carrying The Sound. Type: Acoustic Application: 1/8 1/4 1/2 3/4 4/4 Violin Manually Manufactured; Exquisite And Smooth Quality; Can Be Trimmed, Diy Violin Parts; Product Function: Help Improve The Sound Of The String Use:universal Model Number:maple Wood Violin Bridges Product Type:4/4- 3/4 Suitable Inst Ents:violin Colour:brown Material:maple Size:5*4.2*0.56cm Package Contents: 10*maple Wood Violin Bridges Installation Guide: 1. Hold The Knob And Loose The Strings; 2. Put On Bridge; Each String Corresponding To Each Slot; Place The Rough String On Higher Parts, And Thin String On Lower Parts; 3. Place The Bridge Upright; Pay Attention That The Place Where Bridge Is Put Is The Blank Places On Both Sides Of The F Hole And It Must Be Placed Vertically 4: Tune And Tighten The Strings One By One Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The