LS8 Electric Factory already installed air electric brake in the wings Model no. : FF-B049B Specification : Material : Epoxy fuselage/Balsa wood wings Wingspan : 4000mm Length : 1765mm Wing Area : 80 dm sq. Flying Weight : 3800g-4200g Power system:Included Retract gear: Aluminum Retract glider / Wheel 2.7" Motor : 1200kv (Outrunner) Propeller : 11 x 7 Folding Propeller