Replacement Parts For The Yootones 4Pcs Electric Guitar Skull Volume Tone Knobs Product Details Compatible with most of electric guitar, electric bass.Include a allen wrench,easy to install. High quality metal skull head guitar knobs. Use these skull knobs to dress up your electric guitar or replace the dingy or old knobs. Product Specification: 100% Brand New Material: Metal Color: Silver, Black, Gold(Optional) Knob size: 19 x 20 x 24mm(DxWxH) Mounting Size: Corresponding to the potentiometer mounting inner diameter of 5mm The hex wrench with this knob has a diameter of 2.0mm Weight: 101g Package Content: 4 x guitar knobs 1 x hex wrench Note: 1.If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem. Key Product Features. 2.Due to different monitors, there may be a little color difference. Compatible with most of electric guitar, electric bass.Include a allen wrench,easy to install. High quality metal skull head guitar knobs. Color: Silver, Black, Gold(Optional). Mounting Size: Corresponding to the potentiometer mounting inner diameter of 5mm. The hex wrench with this knob has a diameter of 2.0mm. Use these skull knobs to dress up your electric guitar or replace the dingy or old knobs. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.