Graphtech Black Tusq XL Bass 5-Str PT-1412-00 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: Black Thickness: 1/4" (6.4 mm); Length: 1-13/16" (46.3 mm) Height: 13/32" (10.49 mm); First to Last String: 1-15/32" (37.69 mm) Model: PT-1412-00