Professional designed for bass use. It can let you use your bass more easily and conveniently, also these useful can let you replace the old bass parts to get better music play effect. The bass will not off-key if you lock the screw post when tune the bass properly. Features -Color:Black -Material:Iron -Size:5.80X3.30X3.30cm/2.28X1.30X1.30in - The product has good workmanship, smooth materials and creative, which is very ornamental. - The tuning peg made of craftsmanship, flexible and practical, with excellent texture, and can be tuned accurately and easily. - Professional and very convenient, simple and practical, it will be your good replacement choice. - This bass tuning peg is suitable for bass players to use at any time and is easy to carry. - High sensitivity tuning peg, the product is more accurate, accurate, convenient and fast. Package list: 4 knobs 4 x sleeves 4 x gaskets 4 x screws