Webber WBGF18-3P GFCI AUTO-RESET 15A/120V GFCI NOW INCLUDES ALL 4 Grommet Sizes (Free Economy & Standard Shipping) Free Economy & Standard Shipping --NOW INCLUDES ALL 4 Grommet Sizes - 18, 16, 14, & 12AWG AUTO RESET User Attachable - UL943 Listed 15 AMP 120 Volt Replacement GFCI Plug Unit for Spas, Power Washers, & Many Other Appliances Detailed Replacement Instructions Included With Each Unit Rugged Design and Construction, Built to withstand heavy use