16004ZZ Ball Bearing 20mm ID x 42mm OD x 8mm Width - 20x42x8mm16004ZZ Shielded Ball Bearing 20x42x8mm Chrome Steel Deep Groove The 16004ZZ is a deep groove ball bearing designed for smooth rotation and long lasting performance under primarily radial loads. With dual metal shields and a slim 8mm width, it's ideal for tight clearance applications like small motors, fans, tools, and light industrial machinery. Size: 20mm ID x 42mm OD x 8mm Wide Type: Deep groove radial ball bearing Material: Chrome steel for