Low center-of-gravity iron club

The utility model low center-of-gravity iron club, which is mainly composed of a club head and an insertion piece, etc. The utility model is characterized in that the insertion piece, the specific gravity of which is larger than the club head, is embedded into a caulking groove, so the position of the center of gravity can be moved downwards, and the contact point can be controlled for certain; after a ball is hit, optimal flight angle and distance can be generated; in addition, the caulking groove on the club head can also be two or three, the insertion pieces with different specific weights can be embedded into the caulking grooves respectively, and the position of the center of gravity can be offset left or right to match with various clubs with different centre-of-gravity positions.