Lester 50 Amp Charger Plug & Contacts, Red (8.663-411.0) 50 amp Red connector with 6 AWG contacts. Single piece housings of impact resistant polycarbonate offer both high physical strength and superior dielectric properties. Silver plated solid copper contacts offer low resistance for superior conductivity. Contacts have flared and heat treated barrels which readily accept fine stranded wire and allow easy, quality crimping. Self cleaning contact design resists arcing by keeping conductive surfaces clean and free of corrosion. Integral stainless steel springs maintain constant pressure on the contact to insure a consistent, low-resistance connection.