3 Prong Industrial Grade AC Plug to Female 3-Pin Bates Lighting Connector Adapter Cable. Allows you to use stage lighting with conventional 3 prong wall outlets and extension cords. Wired with 12/3 SJO cable. 15-Amp Male 3-Prong Connector to 20-AMP Female Bates Connector (BATE-HUB1) or 15-Amp Female Connector to 20-AMP Male Bates Connector (BATE-HUB2). 2 Foot Long.