Rotary customized dumbell products include a handle portion, a base portion, a counterweight portion located at both ends of the handle portion, and a transmission self-locking mechanism and a self-locking mechanism that are respectively provided with both ends of the handle portion and abut against the counterweight portion. The driving mechanism. The transmission self-locking mechanism includes a transmission assembly and a self-locking ring; the transmission assembly includes a planetary gear transmission mechanism, an output screw, a long nut and a screw spline. The driven mechanism includes a decorative ring, a two-handle method flange and two transition flanges and a driven assembly. The driven assembly includes two output screws and two screw splines; the counterweight is provided with a customized dumbell product sheet with a dovetail groove structure; the base is provided with an unlocking thimble. The The customized dumbell products can be rotated automatically to add and subtract customized dumbell products, and the customized dumbell products are designed with self-locking device and dovetail groove structure, which is convenient, fast, safe, and excellent in experience.
The above is a brief introduction to the relevant knowledge about customized dumbell products.