Click to expand Tap to zoom Performance Tool W38146 3/8" Dr 6" Extension by Performance Tool Shop in-store. or at DarraghCompany.com Unfortunately, we are shutting down ToolCentral.com. Local customers can still shop online at DarraghCompany.com or in-store. Shop with Darragh SKU 602838 Additional Information Chrome vanadium alloy steel construction for strength and durability. Polished nickel chrome plated finish resists corrosion.