ITEM NAME:Acoustic Guitar Bone Bridge Saddle and Nut Kit With Guitar Accessories Part A8C4 Acoustic Guitar Bone Bridge Saddle and Nut Kit With Guitar Accessories Part A8C4 Real Cattle bone saddle and nut, which can offer a better tone than plastic. Cattle bone saddle size: 72mmX3mmx9mmï¼› Cattle bone nut size: 42.5mmX6mmX8.5mm. Sand Paper (Upgraded of grinding stone): 9 pcs (3 pcs 320 grit, 6 pcs 240 grit). For polish saddle, nut, string and so on. White color 1) 100% real Cattle bone guitar saddle and nut High quality guitar saddle and nut of bone is harder and lasts much longer than palstic one, it can increased brightness and even added bass, This is because the hardness of the material transfers the vibration of the string to the top of the guitar with more efficiency. and the bone at the saddle and nut will definitely increase the loudness and dynamics, it may actually increase the high frequency content of your guitar, and its way prettier too. 2) 9pcs Sand Paper: Originally, we use grinding stone as polish tools, but via consumer feedback and our test, we found sand paper is more useful and more easy to use than the stone , so we upgrade this set, use 3pcs 320 grit and 6pcs 240 grit sand paper instead of 1pcs 240 grit stone.The Sand Paper let you can adjust the high of your saddle and nut anytime, you can use it polish the finger board, fret, side, strings etc also. Size: 70mm*90mm Quantity: 9 pcs (3 pcs 320 grit, 6 pcs 240 grit). Please note: the size pure manual survey, has the error slightly. 3) clean cloth The clean cloth can wipe the sweat on the strings after you play the guitar. Guitar clean cloth size: 145mm*177mm 4) Package include: 1 pcs x Guitar real bone nut 1 pcs x Guitar real bone saddle 9 pcs x Sand Paper; 1 pcs x guitar clean cloth Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.