Abstract: A golf club head comprises: a body, a disk body and a connecting body. The body is equidistantly defined with a plurality of first grooves, and a spacing angle between each two first grooves is defined as a first angle. The disk body is provided with a first protruding rod selectively inserted into one of the first grooves and a second protruding rod, the first and second protruding rods are spaced 180 degrees. The connecting body is equidistantly defined with a plurality of second grooves for insertion of the second protruding rod, and a spacing angle between each two second grooves is defined as a second angle that is bigger than the first angle. With the rotation of the disk body, the connecting body can be adjusted slightly.

Abstract: A putting green simulator comprises a base assembly, a plurality of base boards which are connected to each other and connected to the base assembly, and a plurality of adjusting members mounted on the base boards. Each of the base boards includes a body and two first screw seats of arbitrary length. The first screw seats are able to control the height of the bodies with respect to the ground, adjusting the adjusting members can control the curvature of the bodies, so that the putting green simulator can simulate different curvature of the putting green.

Abstract: A putting green simulator comprises a base assembly, a plurality of base boards which are connected to each other and connected to the base assembly, and a plurality of adjusting members mounted on the base boards. Each of the base boards includes a body and two first screw seats of arbitrary length. The first screw seats are able to control the height of the bodies with respect to the ground, adjusting the adjusting members can control the curvature of the bodies, so that the putting green simulator can simulate different curvature of the putting green.

Abstract: A golf putter head assembly comprises: a putter head with a threaded sleeve, and a balance weight screwed into the threaded sleeve. Adjusting the position of the balance weight inside the threaded sleeve can change the center of gravity of the putter head to meet different player's requirements to obtain an optimum hitting stability and ball moving direction, and increase the success rate in sending the golf ball into the hole.

Abstract: A golf putter head assembly comprises: a putter head with a threaded sleeve, and a balance weight screwed into the threaded sleeve. Adjusting the position of the balance weight inside the threaded sleeve can change the center of gravity of the putter head to meet different player's requirements to obtain an optimum hitting stability and ball moving direction, and increase the success rate in sending the golf ball into the hole.

Abstract: A putter head for golf putter formed of a copper sole, a putter head body molded from zinc/aluminum alloy on the sole, and a face panel fixedly fastened to the front side of the putter head body, the sole having a thin middle part, two thick side parts disposed at two sides of said thinner middle part, top recesses in the thin middle part and the thick side parts, and upright locating rods in the top recesses, the top recesses and the upright locating rods each having a sloping peripheral wall for positive bonding of the sole body.