The Festool 400884 Shim Ring is compatible with a wide range of Festool tools, including:
Sanders: such as DTS 400 EQ, RTS 400, ETS 125 series
Table Saws: CS 70 E, CS 70 EB (Precisio) trimming table saws
Drills: CXS, TXS models
Polishers: RAP 150-21 FE