The 674-ZZ is one of the smallest standard industrial components available, a single-row miniature ball bearing designed for high-frequency rotational stability within a microscopic framework. Outfitted with dual integrated metal shields (ZZ), this 4x7x2.5 mm bearing offers a maintenance-free solution by retaining high-grade synthetic grease while shielding the internal raceways from airborne debris. Its featherweight 0.32-gram construction is specifically optimized for micro-drone gimbals, optical sensors, and precision cooling fans where minimizing starting torque is essential for system responsiveness.