NC&reg; WLTOYS V913 RC HELICOPTER REPLACEMENT SPARE PARTS SET NC is a registered trademark. ONLY Authorized seller of NC can sell under NC listings. Brand New & Genuine Replacement Spare Parts Set for WLTOYS V913 RC Helicopter. You will receive all the spare parts in the picture. 1 BLADES SET. 1 BALANCE BAR. 1 TAIL ROTOR. 1 INNER SHAFT HEAD. 1 CONNECT BUCKLES SETS. 1 MAIN BLADES GRIP SETS