DIYMAG Blank Car Magnets 17x12 in 4-Pack — 25 mil Printable Vinyl Magnetic Signs, Rounded Corners

DIYMAG Blank Car Magnets are a 4-pack of 17 x 12 inch, 25 mil thick printable magnetic signs designed to attach securely to ferrous vehicle surfaces for temporary branding, logo covering, or custom decals.

These flexible magnetic sheets give small businesses, contractors, fleet operators and DIY designers an easy, reusable way to add removable signage to a car or truck without permanent adhesion. Each magnet is white, inkjet-printable vinyl on a reinforced magnetic backing with rounded corners to reduce edge-curling and improve on-road stability. They work on steel surfaces (not aluminum, plastic or fiberglass) and can be trimmed to shape for customized looks or coverage.

How do these magnets stay attached at highway speeds?

The DIYMAG magnets use a 25 mil reinforced magnetic backing engineered for strong surface contact so the sign stays put in normal driving conditions. Rounded corners help prevent lifting at edges, and the flexible sheet conforms to slight curves for full-area adhesion.

• 25 mil magnetic thickness for durable hold
• Reinforced magnetic layer for consistent contact
• Rounded corners to reduce edge roll-up
• Flexible sheet conforms to flat or mildly curved steel panels

Can I print my logo or cut the magnets to shape?

Yes — the white vinyl face is compatible with inkjet and many solvent, eco-solvent and latex printing methods, plus permanent markers. After printing, the sheets can be cut with scissors or a craft knife into logos, strips, or shapes that suit your vehicle or marketing needs.

• Printable vinyl surface for custom graphics
• Works with inkjet, solvent and latex inks
• Easy to trim into logos, numbers or custom shapes
• Allows quick brand changes or seasonal promotions

Will these magnets damage my paint and where do they work best?

When applied to clean, smooth ferrous surfaces, these magnets are non-adhesive and should not harm paint if used properly. They are intended for temporary use and should be removed periodically to prevent moisture trapping; they are not suitable for non-ferrous materials like aluminum or plastic.

• Non-adhesive magnetic backing avoids sticky residue
• Best on painted steel doors, hoods, trunks and panels
• Not compatible with aluminum, fiberglass or plastic surfaces
• Remove occasionally to check for trapped moisture or dirt

How reusable and versatile are these magnetic signs?

The magnets are designed for repeated installation and removal, making them ideal for rental vehicles, contractors alternating between personal and work cars, or businesses that rotate marketing messages. The flexible material stores flat and reattaches easily, keeping signage options affordable and adaptable.

• Reusable across multiple vehicles and applications
• Easy to store flat when not in use
• Quick to swap for different promotions or coverage needs
• Can hide existing logos or protect panels from minor scuffs

Who is this for: DIYMAG 17 x 12 inch car magnets suit small business owners, service professionals, real estate agents, event staff and hobbyists who need temporary, printable vehicle signage that’s strong, customizable and transportable. If you need removable branding, logo covers or custom-cut magnetic decals that won’t leave adhesive residue, this 4-pack provides a practical, reusable solution for steel-bodied vehicles.