This is a setting saver for BOSS compact pedals. - The knobs are completely hidden when stepped on from above, so you can rest assured! - They won't fall off even if the pedal is upside down! - Prevents problems like knobs breaking or bending! - Prevents problems like "I feel like the settings have changed a bit"! - All items have been inspected! 4-knob specification (excluding X series). Please feel free to contact us if you have any questions about whether this pedal can be used with your pedal, or if you would like us to create something for a specific pedal. - This product is made by an amateur using a 3D printer. We will test it for proper function before shipping, but please understand that there may be individual differences. - If no color is specified, we will send a random color. Colors not in stock will cost an additional ¥250 per color. In-stock colors: Green, Red, Orange, Silver, Black, White - Discounts are available for bulk purchases and for combining with other items from my shop. Please feel free to consult with us.