This is a replacement E-Flite 8.25x5.5 Propeller, compatible with the Mini Apprentice S and the Archer Electric Airplanes.E-Flite EFLP82555 8.25x5.5 Propeller Apprentice S2 / Mini Apprentice SSKU: EFLP82555$5.99PriceQuantityAdd to CartBuy Now