Thank you for viewing! This item is 3D printed. It allows you to secure BOSS effects pedals to a board using an adapter and Velcro. You can fix the effects pedal to the board without attaching Velcro directly to the pedal itself. For effects pedals without an aluminum plate on the knobs, there will be some play equivalent to the thickness of the aluminum plate. Set Contents: ・Adapter (left and right set) x 1 set ・Knob guard x 1 ※Effects pedal, Velcro, etc. are not included. Material: PLA Color: Black How to Use: 1. Attach Velcro to the bottom of the adapter. 2. Insert the effects pedal. 3. Place on the effects pedal board. The product may have burrs, layer lines, stringing, chipping, and marks from removing support material. Please be aware of this. It will be shipped in simple packaging. If you would like to purchase multiple items, please contact me. A small discount will be offered for multiple purchases. Please purchase after you are satisfied to avoid any problems. You can purchase immediately if you have no questions. Thank you. #BOSS #EffectsPedal #CompactEffectsPedal #EffectsPedalBoard #Velcro