This is the Motor for the Great Planes Spectra ARF 2 Meter Electric Sailplane (GPMA1050) and the Spectra Select (GPMA17**). FEATURES: Pre-attached wire leads with bullet connectors. T-601 motor. INCLUDES: One Motor (key #5) for the Great Planes Spectra ARF and the Spectra Select 2 Meter Electric Sailplane. REQUIRES: Installing on firewall. SPECS: Diameter of motor shaft: 1/8" (3mm) Diameter of motor can: 1.46" (37mm) Length: 2.24" (57mm) JXS 4/11/02 ir/kh mcw 9/21/04