WLtoys V911 V911-1 V911-2 Helicopter Parts Screws Set Remote Control Toys Parts Item Name: WLtoys V911 V911-1 V911-2 V911-pro V911-V2 Helicopter Parts Screws Set . 1 piece for Balance Bar . 2 pieces for Main Blades . Other screws are for the PCB,shaft,fixed tube,main gear,landing skid and so on. . Note:v911 and v911-2 need 11 pieces of the screws,v911-1 need 9 pieces. . Package Included: 1 x Screws Set .