Schaller 3-D4 C, Bridge for 4-String Electric Bass, 3-Dimensionally adjustable bass bridge made of steel, Saddles: Rollers, Bore hole spacing: 51 mm, Single string spacing: 19 mm, Total string spacing: 57 mm, Dimensions: (L x W x H) 57.4 x 79.7 x 15 mm, Schaller article nr: 12130200, Finish: Chrome, 3 mm