Specifications:Brand: WalkeraPart number: HM-Master CP-Z-07Suit for: Walkera 6CH 3D RC Helicopter Master CPPackage size: 10 * 10 * 1cm / 4 * 4 * 0.4inPackage weight: 9g / 0.3ozPackage list:1 * Original Walkera Master CP Part HM-Master CP-Z-07 Ball linkage set