Description Are you looking for a professional but affordable guitar control knob? If yes, then you can not miss this product. This rotary knob is perfect for daily use. Unique in appearance and practical in use. Do not miss it! Features -Material: Metal -Note: Suitable for guitar/bass with diameter of 6 mm or less. -Replacement parts for electric guitars. The product design is novel, and the workmanship is fine. -Can control the effects of multiple functions, suitable for electric guitars, electric bass, etc. -The product is made of high class materials, practical and suitable for people to use. -This product can be given as a gift to friends who own a guitar, they will need it. -When you need to use them for a long time, this product will quickly become your good helper.