This is the Brushless Motor for the Sensei Foam Trainer Airplane from FlyZone. FEATURES: Outrunner design Replaces worn or damaged motors INCLUDES: Brushless Motor with four Mounting Screws for the Sensei Foam Trainer REQUIRES: Installing in fuselage SPECS: Motor Diameter: 1.2" (30mm) Length: 0.87" (22mm) Shaft Diameter: 0.16" (4mm) RPM/v: 1350Kv jxs 09/07/11 ir/jxs