Our 20 A Insulgrip® plugs and connectors maintain Hubbell's classic integrity, solid construction and safety features that make these devices the "industry standard". Insulgrip®'s cord gripping design clamps the conductors, not just the cable jacket, making it the industry's most powerful cord grip. The cord grips also provide a clean, one-piece look and makes it stronger. Insulgrip®'s design guards against contamination. The nylon body and housing of the plugs and connectors are resistant to industrial chemicals, solvents and hydrocarbons. The face of each plug is molded specific to the blade configuration, eliminating holes that attract debris. And finally, our dust shield provides additional protection from contamination. Additional features that make Insulgrip® the industry standard are our improved contacts that provide better terminations, an exclusive double rivet design for the female contacts and an easy-to-read identification system. 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