This is a scraper holder that snaps into a Multiboard panel and is used with this scraper [https://makerworld.com/en/models/783156-no-hardware-bambu-lab-scraper-for-plastic-blades#profileId-944190](https://makerworld.com/en/models/783156-no-hardware-bambu-lab-scraper-for-plastic-blades#profileId-944190) that user [https://makerworld.com/en/@heje](https://makerworld.com/en/@heje) has made.  He has a holder in the print profile but it is flat on the back.  Mine has the Multiboard hooks on it so it just snaps into place.