These red-green painted AlNiCo long cylinder magnets, precision-engineered at D9.5×200mm, are premium aluminum-nickel-cobalt permanent magnets purpose-built for educational demonstrations, magnetic field experiments, and polarity identification tasks. Crafted from high-grade sintered AlNiCo alloy, they deliver consistent magnetic flux density, excellent coercivity, and exceptional long-term stability, even under repeated use and temperature fluctuations. The distinctive red-green paint scheme clearly marks the north and south poles, eliminating guesswork during experiments, while the glossy enamel coating provides enhanced corrosion resistance, scratch protection, and a durable, easy-to-clean surface. The slender cylindrical form factor creates a strong, uniform axial magnetic field, making these magnets ideal for teaching magnetism principles, demonstrating field lines, and conducting hands-on physics experiments. Each magnet undergoes rigorous quality control.