-Designed for use with voice and low data applications with punch down blocks, patch panels, and distribution boxes - Can also be used as extension cables - 24 AWG unshield twisted pair (UTP) Category 3 rated cable - Includes one 50-pin male telco connectors (RJ21) and one 50-pin female telco connector (RJ21) - Available in 5, 10, 15, and 25, 50, 75, and100 ft