Please read the following description and profile. [Manufacturer] Schaller [Model Number] 3-D4G [Condition] Used This is a Schaller bass bridge. Includes three mounting screws. Shipped via Rakuraku Mercari delivery. The following is quoted from Sound House: Features SCHALLER bass bridge, gold, 3-dimensional adjustment (string height, pitch, string spacing adjustable) Specifications ■ Bass bridge ■ Gold ■ 3-dimensional adjustment (string height, pitch, string spacing adjustable)