The present invention has a loft angle for each iron number #5, #6, #7, #8, #9, and P iron, and the weight is placed on the back of the golf head face to have the same value according to the #7 iron golf head. The golf head face has a weight control rear surface of an isosceles triangle structure formed so as to have a step difference from the rear face made by holding the center of gravity and having different top and bottom thicknesses for weight control, and the center of gravity is the golf head face according to the geometric structure of the isosceles triangle for weight control Concentrate on the lower center and maintain a constant depth along both equilateral bevels with a step so that the center of gravity is not disturbed by the symmetrical structure while abutting the vertices of an isosceles triangle at an inclination angle to achieve symmetry, weight control and center of gravity stability a plurality of golf clubs golf heads having straight grooves for; a plurality of golf club golf shafts connected to the lower portion of each golf club golf head according to the iron number, the length of which is the same as the #7 iron, and the same weight; The invention relates to a uni-length golf club, characterized in that it is attached to surround the lower portion 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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