Small 8mm x 5mm neodymium disc magnets N38 (25 - 100pcs) DIY craft scalextric | eBay
2 PCS Powerful N38 Neodymium Bar Magnets, Permanent Rare Earth Magnets Rectangular Magnets Metal Neodymium Magnets - 40 x 10 x 10 mm / 1-9/16" x 3/8" x 3/8": Amazon.com: Industrial & Scientific
Radial Ring Magnet - N38 0.83"OD x 3/5"ID x 3/5" Radially Oriented Magnetized Unipolar Neodymium Magnets for Electric Motor Wind Generator (N Pole Outside): Amazon.com: Industrial & Scientific
Neodymium Magnet | Ndfeb Magnet | Magnetic Materials - N38 Neodymium Magnet 500pcs 6 X 3 - Aliexpress