Festool 577520 Finish Delta Sander DTS 400 REQ-PlusDetails 577520, Festool Sander DTS 400 Plus The sanding pad of the cordless DTSC 400 and DTS 400 REQ got an upgrade! With an all NEW hole pattern, the sanding pad can now reduce suction on the surface and optimize airflow through the tool. This leads to better guidance and control over your delta sander and improves the surface quality of your workpiece. Specifications Festool Finish Delta Sander DTS 400 REQ Plus 577520 APPLICATION Contracting &