Marrette® Type II® Winged wire connector. Design engineered for additional twisting power to meet the high quality expectations of the electrical professional. Made of tough, durable polypropylene and 105°C rated to withstand high installation pressures. Long-Wing™ design for smooth hand application. The long, off-set wings with raised edges offer a full-length, finger-friendly gripping surface. Torque can be selectively applied exactly where you want it: top for tight finger locations, bottom for large wire bundles. Ribbed body surface gives additional grip, even when hands are greasy or damp. Deep, wide throat ensures full insulation coverage. Threaded entry helps guide large wire bundles into the spring chamber.