Review on 🔧 Enhance Stability: Universal 100g Gimbal Counterweight for Balancing Moment Lens/Phone Case Cover - Perfect for Zhiyun Smooth 4 DJI Osmo Mobile 2/Osmo Mobile 3 Moza Mini-mi Feiyutech Vimble 2 by Danielle Albanese

Works well with the Zhiyun Smooth 4 gimbal. I use it to stabilize both my Samsung Note 8 (in the Otterbox Defender case) and my GoPro Hero 8 (in the Plusz mounting plate) to compensate. . I would recommend a drop of threadlocker on the counterweight threads. This will prevent them from loosening due to vibration.