This sale is for 4 plugs. The HBL2611 is a Twist-Lock 2-pole 3-wire 30A/125VAC Insulgrip Grounding Plug with brass contacts and nylon housing/cord clamp. This plug features superior cord grip design protects terminations from excess strain. Clear funnel shaped wire entry for ease of termination. Integral dust shield protects wiring chamber from dust or contaminants. It accepts #16 to #8AWG stranded copper wire only and terminals identified in accordance with UL 498. IP20 Moisture resistance HB or better per UL94/CSA 22.2 No. 0.17 Flammability rating -40 to 75C Operating temperature range UNSPSC # 39121403