Specifications:Features:- 4 pcs of volume tone control knobs- The central hole for Pots is approx. 6mm in diameter.- High quality metal material.- Transparent knobs with black button color and golden brown numbers on it.Shape: Cylinder with a domeMaterial: Metal with black platingColor: BlackDiameter: 17mmHollow Shaft Diameter: 6mmNet Weight: 11g (1pcs)Package Weight: 53gAfter Sales Service: 1 Year WarrantyPackage Weight : 53 G / 1.87 OuncesPackage Dimensions (L*W*H) : 70*50*60 MM / 2.76*1.97*2.36 InchesRetail Packaging: No, No PackingPackage Include:4 x Metal Guitar Knob