The Pass & Seymour L520P Turnlok Locking Plug is designed for reliable electrical performance. Key features include Turnlok® Locking Plug, 125 VAC, 20 A, 2 Pole, 3 Wires, NEMA L5-20P, Industrial Grade, 0.385 to 1.15 in Cord Dia, -40 to 75 deg C, Nylon, Black/White, 2.2 in Dia x 3.8 in L.