Thank you for your interest in our product. I didn't like the idea of Velcro (hook and loop fasteners) sticking to the bottom of my effect pedals, so I created a platform for attaching Velcro. By attaching this product to your effect pedal with silicone tape or double-sided tape, you can mount it on your pedalboard without the sticky mess. 【Applicable Products】 This mounting base is designed for the following Empress Effects pedals: Empress Effects Bass Compressor / Blue Sparkle ※Effect pedal itself is not included. 【Material】 Made of PLA (black). We inspect the products, but due to the nature of 3D printing, minor imperfections such as burrs, layer lines, stringing, and support material marks may remain. Please understand. 【Other】 To avoid any issues after purchase, please make your purchase after you are satisfied. You can purchase immediately without any inquiries. Thank you for your consideration.