1. Generally used to press string, it is firmer. 2. The effect of vibrato and fermata is very good. 3. It is convenient to install the strings, perfect replacement for the old one. 4. Complete accessories and great workman, it is a good set for yours 5. The material of bottom column and saddle ensure the durability of product. Type: bridge Condition: 100% colour:Silver Material:Zinc alloy + iron Package Contents: 1 x tremolo crank 1 x Spring hook 1 x Hook screw 1 x string lock 2 x String lock installation screw 3 x Hook spring 2 x lift screw 1 x M wrench 1 x 2.5MM wrench 1 x Pull string board Only the above package content, other products are not included. Note: Light shooting 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.