this is the side you use – the groove helps the glue adhere better to the magnetic foil

Looks like small Beetles from VW

They are made of plastic with a small strong neodymium magnet at the bottom

orange and red

As an example

Magnetbånd Gult, 40 mm. boardmarker mix this is the side youYellow magnetic foil, available in 1 metre rolls. Width: 4 cm Thickness: 1 mm Length: 1 metre. Colour: Sunny yellow. Strength: approx. 80 gr sq. cm. Please note: Magnetic foil is not suitable for magnetic glass boards. Magnetic foil is incredibly flexible. Here are some of the things you can do with magnetic foil: Cut with regular scissors. Writable. Cleanable. You can also use magnetic foil for marking whiteboards, storage shelves, etc. The magnetic