These sturdy and practical guitar effect footswitch knobs are used for instruments. If your knobs are dirty, old, or just want to dress up your guitar. These knobs will be great replacements. Fine craftsmanship without burrs. Do not hesitate to take them! Features -Color:Assorted Color -Material:Plastic -Size:2.40X2.40X1.20cm/0.94X0.94X0.47in -Guitar footswitch topper can protect your effect pedal very well,extending effect pedal’s service life. -The installment of guitar foot cap add touched surface for soles and effect pedal, making effect footswitch more efficient. -These effect pedal protection caps are simple in appearance and color, which can match with most of the guitar effects. -Guitar effects foot are made of safe and reliable plastic material, durable and sturdy. -Guitar Effect Footswitch topper can easily be fixed on your guitar effect pedal, to provide you a better stepping feeling. Package list: 12 x Knob