1. Constructed with zinc , die-cast bridge unit ensures sturdy structure and good sound quality. 2. Both Bridge and Tailpiece are curved to accommodate the radius of the neck or for use on an arch top guitar. 3. Fits for , , SG electric guitars... 4. Fully adjustable saddles for harmonics, with working rollers, complete with locking posts. Bridge Size : Width (17mm), Length (84mm). String Spacing: 10.1mm Tailpiece Size: Width (17mm), Length (100mm) Tailpiece Spacing between 2 studs (82 mm. from center to center) Type:guitar accessories color:Silver :Zinc Package Contents: 1 x Roller Saddle Bridge with 2 Studs 1 x Tailpiece with 2 Matching Studs 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.