Amazon: black sand magnet
SE Prospector's Choice 5 lb. Magnetic Black Sand Pocket Separator Pen PM6549. 4.5 out of 5 stars 153. $7.00 $ 7. 00 $8.00 $8.00. FREE Shipping. More Buying Choices $6.88 (4 new offers) Frankford Arsenal Stainless Steel Media for Case Tumbling and Reloading with Transfer Magnet Sold Separately. 4.7