FeaturesSmooth, rounded integral bushing in hubs protects conductor insulationRoomy interiors more wiring spaceAccurately tapped, tapered threads for tight, rigid joints and excellent ground continuityForm 85™ copper free aluminum UNILETS™ are lightweight, self oxidizing, self-renewing and offer a high corrosion resistanceLightweight aluminum facilitates shipping, handling and installingSizes with flat back design ideal where fitting is mounted flat against surfaceInternal volume and maximum wire capacity clearly marked on castings