1. Electric guitar or bass knob is lightweight and has an exquisite appearance and stable size it is convenient to carry which is mainly suitable for most electric guitars and bass. 2. Metal plating knob with strong impact resistance and good surface gloss. Flat design on the top of the knob with anti-slip lines all over the body. The integrated structure of outer metal and inner PVC make you have a good touch. 3. Take off the old knob and replace the new one you received it is easy to install firm internal thread. 4. Tips: Please note that this knob can be suitable for most guitars and bass but not all. Please confirm the size before buying.