The Hopkins Endurance LED Test 7-Blade to 4-Flat Flex Adapter allows you to quickly convert your 7-blade vehicle side connector to a 4-flat trailer end connector. Integrated LED lights let you know when wiring is functioning properly. The Endurance Adapter includes a dust cover for long-lasting performance and an easy-pull grip design for disengaging from the tow vehicle. Backed with the industry's best 3-year warranty.• Endurance professional-grade adapter• Plug-In Simple! Adapter• Impact and corrosion-resistant• Verifies electrical continuity• Includes dust cover• 3-year mfr. warranty Endurance Adapter includes a dust cover for long-lasting performance Easy-pull grip design for disengaging from the tow vehicle Impact & corrosion-resistant | Hopkins Manufacturing Hopkins Endurance LED Test 7-Blade to 4-Flat Flex Adapter