Babo system sanding block

This is for the Babo organizer system by Willi 3d. https://makerworld.com/en/models/14125?from=search#profileId-14122Sand block is (6 x 2) or (150mm x 60mm)Each individual paper holder (1 x 4) or (120mm x 30mm) Here is the link of the sandpapers and block. https://www.amazon.com/gp/product/B0B5QX24XD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1