Graphtech Tusq Nut 1 11/16" Slot Martin L/H PQ-M600-L0 TUSQ is very easy to sand or file and is very resistant to chipping or flaking. TUSQ nuts provide the best tonal link between your strings and guitar neck. Color: Ivory Thickness: 7/32" (5.79 mm); Length: 1-23/32" (43.41 mm) Height: 3/8" (9.17 mm); First to Last String: 1-3/8" (35 mm) Model: PQ-M600-L0; For Left-Handed Guitars