Pedal Switch Toppers - Green, Set of 4 【Overall Size】 - The overall size of these guitar pedal knobs is 25mm x 12mm / 0.96 inches x 0.47 inches (diameter x height), suitable for 10mm (2/5 inch) button guitar footswitches, with an inner height of approximately 5.5mm (0.22 inches). Please double-check the dimensions of your footswitch before ordering. 【Necessity of Caps】 - Guitar pedal button caps enlarge the pedal buttons, making them easier to press, protecting the buttons, and reducing wear during use. 【Easy to Use】 - These guitar pedal toppers have the easiest installation design; simply place them directly on the pedal button and press to complete the installation. Thank you for viewing. A green protector set to protect your pedal buttons. - Color: Green - Type: Pedal Button Protector - Function: Protects pedal buttons Thank you for viewing.