It has no magnetism itself and is not a for MagSafe magnetic accessory.
YOSH 3M Sticker Metal Plates Replacement Mount, Plate Kits with Black
YOSH 3M Sticker Metal Plates Replacement Mount, Nicht für MagSafe, Black
YGKJ 3M Adhesive Metal Plate, 4 Packs Universal Thin Plates Silver
YOSH Metal Plates Replacement Mount Plate Kits with Adhesive for Silver
Hao Zhu 3M Adhesive 4 Packs Thin Metal Plate For Magnetic Car Phone...
Universal 4 Pcs Replacement 3M Plate Adhesive Metal Accessory Pack for Car Mount
