These magnetic pin backs have two pieces: a metal bar with adhesive strip and a plastic piece with two strong rare-earth magnets. Affix the metal bar to your FLORA projects-- it's just the right size! Then attach your FLORA project to any garment without poking holes in your clothes. The magnets are strong enough to hold up even a hefty circuit! We recommend against soldering/brazing/welding to any part of the magnetic pin back, as the galvanized steel plate would release harmful zinc fumes and heat demagnetizes neodymium magnets.
Magnetic Pin Back (14:35)
- Product Dimensions: 45.3mm x 13.3mm x 5.1mm / 1.8" x 0.5" x 0.2"
- Product Weight: 10.0g / 0.4oz
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Magnetic Pin Back 
- Brand: Adafruit
- Product Code: ADA-1170
- Reward Points: 4
- Availability: 5
- Ex Tax: £4.95
- Price in reward points: 100