Description Overview Model: SE-9 Year: 1992 Configuration 1 Converted in 2001 to SE 11 216 rotor 31-33 rotor diameter Single robot With Corolab B174 opening roll Conical 4 x 20 Quantity: 12 Configuration 2 240 rotor 31-33 rotor diameter Double robot With Corolab B174 opening roll Conical 4 x 20 Quantity: 8