4 x 4 Inch Magnetic Field Viewing Film, Magnetic Field Viewer, Magnetic Flux Display, Magnet Pattern Detector, See Magnetic Field for Scientific Project (4 * 4 Inch) 4 * 4 Inch auspowers_batchfour 5mm -----50pcs / 2mm-----50pcs 2

5mm -----50pcs / 2mm-----50pcs 2

26mm diameter needles reduce cutting area by 58% compared to 27G needles and by 25% compared to 30G

Perfect for classroom floor decorations and teacher supplies

PROTECT - Moisture Resistant

4 x 4 Inch Magnetic Field Viewing Film, Magnetic Field Viewer, Magnetic Flux Display, Magnet Pattern Detector, See Magnetic Field for Scientific Project (4 * 4 Inch) 4 * 4 Inch auspowers_batchfour 5mm -----50pcs / 2mm-----50pcs 24 x 4 Inch Magnetic Field Viewing Film, Magnetic Field Viewer, Magnetic Flux Display, Magnet Pattern Detector, See Magnetic Field for Scientific Project (4 * 4 Inch) Product Name: Magnetic Paper Magnetic Field Viewing Film Magnetic Field Viewer Magnetic Field Demonstrator Color: Brownish Yellow Material: magnetic nanoparticles Features: Clearly observe the patterns of the magnetic field. Place the film as close as possible to the magnet item to