Graph Tech Black TUSQ XL Nut Slotted 6 String PT-6115-00 Play aggressive, shred or bend strings without worry! Lightweight & Highly rigid material for optimum vibration transfer. Length: 1-23/32 (43.31mm) Width: 3/16 (4.88mm) Height: 3/8 (9.78mm) - E to E Spacing: 1-7/16 (36.83mm) - Model: PT-6115-00