The Hubbell Wiring Device-Kellems HBL2421M4UPC: 783585580548 | UNSPSC: 39121402 | GTIN: 00783585580548Wiring Devices > Locking Devices > Locking PlugsWiring Device-Kellems Twist-Lock® Insulgrip® Locking Plug, 3-Phase Male Grounding, 250 VAC, 20 A, 3 hp, 3 Poles, 4 Wires, NEMA L15-20P, IP20 Enclosure, 0. 35 to 1.15 in Cord Dia, -40 to 75 deg C, Screw Terminal, Brass/Clear Polycarbonate/Nylon, Black, 2.33 in Dia x 2.75 in L