Feature: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Made of Ebony, Perfect for 4 Strings guitar repair or making.4.Nuts have precut string slots and easy to install to your guitar.5.It is sanded into a good tight fit and it noticeably improved your guitar sound.6.Suitable for 4 string guitar.Specifications:Material: EbonyColor:BlackNeck Nut Size:35 x 5 x 7mm/1.38 x 0.2 x 0.28 Inch( L x T x W)Bridge Saddle Size:53 x 3 x7mm/2.09 x 0.12 x 0.28 Inch( L x T x W)Weight:100gPackage include:10x Guitar Slotted Nuts