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.Wonderful replacement for old damaged guitar control knobs 4.The inner middle hole diameter is about 5.92mm ,easy to use and install 5.It is suitable for guitar Specification: Material:ABS plastic Color:Black Brand name: Dimension:15 x 15 x 15mm/0.59 x 0.59 x 0.59 inch(L x W x H) Middle hole diameter:about 5.92mm/0.23 inch Weight:15g Package include: 3 x Dice Guitar Control Knob 1 x Wrench |