Abstract: A torque transmitting shaft of this invention is so constructed that a flexible shaft liner assembly is inserted in an external tube, and a flexible shaft is inserted in a flexible shaft liner. The flexible shaft liner has two groups of projecting portions extending in a longitudinal direction, one-group projecting portions extend consecutively in the longitudinal direction, and the other-group projecting portions have notches at plural spots in the longitudinal direction. Vibration-proof rubbers fit in the notches, and the one-group projecting portions fit in grooves formed on inner faces of the vibration-proof rubbers. Outer faces of the vibration-proof rubbers contact with an inner face of the external tube so that the flexible shaft liner fits in the external tube.

Abstract: In a mowing nylon cutter comprising a nylon cord, the nylon cord holds agricultural chemicals. The nylon cord is formed, for example, in such a manner that a nylon and a crystal technical product of agricultural chemicals are mixed and the mixture is extruded. When this nylon cutter is used, the agricultural chemicals held in the nylon cutter directly contact with and adhere to stalks remaining after the weeds are mowed simultaneously with the mowing of weed. Namely, the agricultural chemicals can be applied effectively simultaneously with mowing.