Musiclily 6 String Rosewood Saddle Thru Guitar Bridge For Martin Style Acoustic Guitar Mainly For Martin style acoustic guitar Material: Rosewood; Durable to use 153MM length, first string hole center to sixth string hole center is 54mm, saddle slot is 72mm length. Width: Approx. 1.1"/28mm (About 1.46"/37mm at the widest point) Package Includes:1 x Saddle Thru Acoustic Guitar Bridge Rosewood