304 stainless steel construction with galvanized surfaces for exceptional rust resistance. These trailer wiring clamps offer strong, longlasting outdoor performance and secure cable management for boat, trailer, or solar panel installations. Dualsided design with a smooth wavy side that holds wires securely without damaging insulation, and a barbed side that grips trailer frames for easy installation even with larger diameter cables. Precise sizing: clamp measures 22.5*6.2 mm and accommodates cables with diameters between 6.0 mm and 6.5 mm, allowing you to manage two wires at once for neat organization in solar panel setups, boat wiring, and trailer electrical systems. Cable protection technology: concave shape protects insulation from compression, while the serrated back provides a strong grip to keep the clip in place after installation, reducing maintenance during travel or exposure to vibration. Use scenarios Boat trailer wiring: secure dual cables for lighting, brakes, and power along the trailer frame. Solar panel installations: neatly route and secure cables from panels to controllers or inverters on trailers or RVs. General trailer electrical systems or marine applications: manage two wires simultaneously with reliable grip and ongoing protection against vibration.