These toppers sit securely with 3 set screws and a rubber insert. The rubber insert also protects your pedal switch. Reliable Material: Our guitar switch protector is made of aluminum alloy material, reliable and reusable, sturdy and strong, safe and lightweight, not easy to break or bend, and will last a long time. Size Information: Our footswitch topper is suitable for most pedal switches. Please measure your pedal switches before purchasing to ensure a proper fit. Attractive and Decorative: The pedal topper allows you to see and hit your targets easily and accurately, protecting your pedal switches from wear and tear while decorating them at the same time. More Solid: Our guitar pedal topper is designed with 3 set screws for a more secure fit. The top hat sits firmly when pressed down on both sides, giving you a better playing experience. Features: A Perfect Gift: You can send this pedal switch topper to your friends, family, colleagues, neighbors, relatives, classmates, students, and others who like music. They will be happy to receive such a simple but practical tool. Easy to Control: Our metal footswitch topper makes your tuner on/off and tap tempo switches easier to control, and the silver color matches your switch color, which is harmonious and beautiful. Material: Aluminum alloy Color: Silver Package Contents: 16 x Guitar effect caps, 4 x Wrenches Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement error is +/- 1-3 cm.