an annular shaped nozzle main body including a plurality of blades arranged at a predetermined interval in a circumferential direction of the radial turbine, a first end wall connected to one end part of each of the plurality of blades in an axial direction of the radial turbine, and a second end wall connected to another end part of each of the plurality of blades in the axial direction;

a first ring surrounding the first end wall; and

a second ring surrounding the second end wall,

wherein the nozzle main body includes a plurality of segments connected in the circumferential direction;

the first ring includes a first outer side groove that is recessed toward an outer side of the radial turbine in a radial direction, and extends in the circumferential direction;

the second ring includes a second outer side groove that is recessed toward the outer side in the radial direction, and extends in the circumferential direction,

each of the plurality of segments includes:

a first divided annular portion formed by dividing the first end wall at a plurality of first divided surfaces that are inclined with respect to the radial direction; and

a second divided annular portion formed by dividing the second end wall at a plurality of second divided surfaces that are inclined with respect to the radial direction, and

wherein an outer circumferential portion of the first divided annular portion includes a first flange member that projects toward the outer side in the radial direction, the first flange member being inserted into the first outer side groove; and

an outer circumferential portion of the second divided annular portion includes a second flange member that projects toward the outer side in the radial direction, the second flange member being inserted into the second outer side groove.