Nut for Kala U-Bass models, 4-string model for Kala Round Wound strings, right-hand version, manufactured from Black TUSQ, slotted (narrow slots), flat bottom. Spacing E to G: 32.66mm, dimensions (L x W x H): 45,05 x 5,87 x 11,85mm. Note: All Graph Tech nuts and saddles are slightly long and wide to ensure extra room to achieve a perfect fit for your guitar. This extra material can easily be removed with fine grit sandpaper.