4 x Sous Vide Weighted Magnets – Weigh Down Hop Sacks
Weighted food grade magnetsMore Info
These are generally intended for use in sous vide cooking. However, they look like they would work well to weigh down hop sacks.
Note that this is for a total of 4, other count options are available.
4 Pcs Sous Vide Weights Magnets | Prevent Floating Sous Vide Bags | Food Grade Silicone Magnet | Better Than Clips, Racks and Other Sous Vide Accessories – note that multiple variations of this product may be available, as such a different version may appear at this link