The Bosch 2604220502 is a genuine replacement motor field (stator) 220V - 230V for several corded cutting and shearing power tools, including :
GSG 300 (Foam Rubber / Insulation Cutter)
GNA 1.6 / GNA 16 (Sheet Metal Nibbler)
GWB 10 / GWB 10 RE (Right-Angle Drill)