This is an underplate for securing a ProCo RAT2 (made in the USA) to an effects pedalboard with Velcro. This product is produced in small quantities and manufactured using a 3D printer. Due to the nature of this manufacturing process, - Fine, thread-like residue - Slightly imperfect hole formation - Slight distortions in circular shapes may be present. There are no issues with use or installation, but please refrain from purchasing if you prioritize a perfect finish. Installation Instructions Remove the rubber feet from the bottom of the unit and screw the plate in place using the original screws provided. No special modifications are required, and it can be returned to its original state. Compatible Models Measurements and verification were performed using a ProCo RAT2 (made in the USA). Due to specification changes and individual differences in the RAT series, compatibility with all versions has not been confirmed. Therefore, we are unable to answer inquiries regarding compatibility with specific versions. Thank you for your understanding. Shipping Production and preparation will begin after your order is placed, so it may take some time for shipping. ※ Please refrain from price negotiations.