Home407 Mainrotor Mast Nut SocketP/N: 407MNS-1 3/4 drive, 1-1/4 impact socket for the Mainrotor Mast Nut. 3/4 drive is also available 407 Main Rotor Mast Nut Socket - 1"SKU: P/N 407MNS-1$68.00PriceShipping infoQuantityAdd to Cart