The Platinum Tools 100030BK Strain Relief for EZ-RJ45 Cat 6 Connector is a black unit designed to provide strain relief for RJ-45 connectors. With a quantity of 50 pieces in one unit, this product is essential for ensuring a secure and reliable connection for Ethernet cables. The California Prop 65 Warning indicates that the product may contain substances known to cause cancer or birth defects, making it important to handle with care during installation. Ideal for professionals in the networking industry, this strain relief connector is a valuable addition to any toolkit.