The World-Famous Workhorse The J-45 is Gibson's best-selling acoustic of all time. Nicknamed "The Workhorse" and first introduced in 1942, this iconic acoustic has become the cornerstone of its round-shoulder, dreadnought line. World renowned for its full, balanced expression, warm bass and excellent projection, the J-45 has been refined to carry this legacy to new heights. The Gibson J-45 Standard delivers a sound with incredible dynamic range, warm mids, and a tight punchy bass. Profile Slim Taper Scale Length 628.65 mm / 24.75 in Fingerboard Material Rosewood Fingerboard Radius 304.8 mm / 12 in Fret Count 20 Frets Standard Nut Material Black Nut Width 43.81 mm / 1.724 in Inlays Mother-of-pearl Dots Joint Compound Dovetail Neck-to-body