Bystar Pro Magic Strong Magnetic Ring Magnet Coin Finger Magic Tricks Props Show Can be used in many magic shows. Use it be careful,it's easy to break. Internal diameter:18mm 19mm 20mm 21mm More Details: as the pictures show OPP bag inside,and giving a beautiful box as a gift You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!