Graphtech Tusq - Mandolin Slotted Nut PQ-1535-00 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: 5/32" (4.11 mm); Length: 1-3/16" (30.4 mm) Height: 5/16" (7.59 mm); First to Last String: 31/32 (24.77 mm) Model: PQ-1535-00