Heavy-duty, electrically insulated extensions for Utility AirSpade 4000. Provide extended reach capability for hard-to-reach locations. Constructed from high-pressure rated, insulated inner air hose surrounded by non-conductive, rigid fiberglass outer tube. Inner air hose rated to 75kV per Ft. for 5 minutes per SAE 100R7. Outer fiberglass tube rated to 100kV per Ft. for 5 minutes per ASTM F711. Non-sparking Brass connection hardware. Compatible with all AirSpade 4000 components and accessories. Includes non-sparking Brass coupler.