Check the listing for details. E-flite UMX Eratix 3D FF Flat Foamy 450mm BNF-Basic and SAFE EFLU02050. Condition: New. Listed at 169.99 USD. E-flite UMX Eratix 3D FF (Flat Foamy) 450mm RC Airplane Introduction The E-flite® Eratix 3D FF (Flat Foamy) 860mm took the market by storm by being the most convenient, easiest to assemble, and fly “flat foamy” model in its class. Now the UMX™ Eratix 3D FF 450mm offers those same benefits in a scaled-down, ultra-micro size so you can fly in more places and smaller spaces – including indoors! It arrives fully factory assembled and ready to fly right out of the box, including a 2S-compatible brushless outrunner motor with a prop saver, four servos, and a Spektrum receiver featuring AS3X® and SAFE® Select technologies. E-flite UMX Eratix 3D FF (Flat Foamy) 450mm RC Airplane Overview The E-flite® Eratix 3D FF (Flat Foamy) 450mm offers the aggressive aerobatic.