Bulk Ethernet Cables refer to spooled Ethernet cables (typically in lengths like 100ft, 305ft/100m) for custom cutting and installation. They offer cost-effectiveness for large-scale projects, flexible length customization to avoid waste, and support various cable grades (Cat5e, Cat6, Cat6a, Cat8) to meet diverse speed and scenario needs, making them ideal for home renovation wiring, office network setup, and data center deployment.