Musiclily Flat Bottom Slotted Bass Bone Nut for 4 String Fender PB JB Precision Bass Jazz Bass, 38x3.5x5/4.5mm (Pack of 2) Flat bottom, with string slots, bone nut for for 4 string bass E to E String Spacing:1-1/8" (28.5mm) Length:1-1/2 inch (38mm);Thickness: 1/8 inch (3.5mm); Height: 3/16 inch(4.5mm) Material:Real Bone; Color: Bleached White Package Includes: 2 x Bass Nuts