rod clamp waterproof,anti-UV,corrosion resistant CE , ISO9001 certificates rod clamp:Associated fittings i.e. Brass Bronze ground earth grounding Gun metals castings cast Clamps , Couplers, Bronze, Gun metals fittings parts components casting parts.The earth rod accessories like Brass Bronze Gun metal earth clamps and couplers available in 3/4" 5/8" 1/2" 3/8". rod clamp