Free 

This model changes the 20x6x2mm magnet slots to fit 3/4 x 1/4 x 1/8 inch magnets, such as these from TotalElement . The tolerances are a bit tight in some magnet slots, so you may need to gently tap them into place w/ a hammer.
NOTE: Wherever you get your magnets from, make sure that they're N52 magnets!! Using weaker magnets may cause the storage box to fall out as the magnets are the only things holding it in place!












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