According to the present invention, each of the iron numbers #4, #5, #6, #7, #8, #9, and P iron has a loft angle, and the weight of the golf head has the same value according to the #7 iron golf head. It has a weight control rear surface of an isosceles triangle structure formed to have a step difference from the face rear surface, which is formed for weight control on the back side of the face with different vertical thicknesses and is made by catching the center of gravity, and the center of gravity according to the geometric structure of the isosceles triangle for weight control Concentrated in the lower center of the golf head face, while maintaining a constant depth along both equilateral slopes with a step so that the center of gravity is not disturbed by the symmetrical structure, the weight control and weight are symmetrical while touching the vertices of an isosceles triangle at an inclination angle A plurality of golf club golf heads having straight grooves for central stabilization; a plurality of golf club golf shafts connected to the lower portion of each golf club golf head according to the iron number and having the same length as the #7 iron and having the same weight; The invention relates to a uni-length golf club, characterized in that it is attached to surround the lower part of the golf shaft of the plurality of golf clubs, has an anti-slip surface shape, has the same length, and is composed of a plurality of golf grips of the same weight.
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