The TRS800 series of staples (TRS804, TRS805, TRS806, TRS808, TRS809) have been discontinued. These staples fit the TR70, TR80, TRE100, TRE300 and TRE50 staplers. Our current model staple that will fit these older staplers is the TRC600 series (TRC604T, TRC605T, TRC606T).