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 3.Made of Solid ABS Plastic .4.Fits for Electric Guitar.5.It Is Wonderful Replacement for Your Electric Guitar And Durable.Specification:They Will fit Most Guitars5 Pieces Knobs-Including 5 Volume+ 10 Tone5mm Knurled Inner DiameterMaterial:PlasticColor:BlackSize: approx. 25.5 x 17 x 13mm/1.00 x 0.67 x 0.51 inch(L x W x H)Diameter of Bottome Center Hole: approx. 5.5mm/0.22 inchWeight: 30gPackage Include:5 x Volume Knob10 x Tone Knobs