English: Features: Mainly made of stable metal, durable and wear-resistant. With a small wrench, easy to install and use. Pure gold color textured and non-slip coating surface, beautiful and easy to match the color of your instrument. Compatible with most electric bass guitars. Wonderful replacements for your old or dirty plastic button. Specification: Condition: 100% Brand New and High Quality Material: Metal Color: Golden Suitable for most electric bass guitars Quantity: 4 buttons + 1 key Height: Approx. 19mm Outer Diameter: Approx. 18.5mm Package: 4 x Bass Guitar Metal Knobs 1 x Wrench Note: There may be some unavoidable scratches on the surface coating, but this will not affect its normal use. Please make sure you do not mind before bidding. Appreciate your understanding. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.