Home407 Mainrotor Mast Nut SocketP/N: 407MNS-3/43/4 drive, 1-1/4 impact socket for the Mainrotor Mast Nut. 1" drive is also available for use with torque multipliers407 Main Rotor Mast Nut Socket - 3/4SKU: P/N 407MNS-3/4$65.00PriceShipping infoQuantityAdd to Cart