4 Prong 30-AMP 10-Feet 250-Volt Generator Extension Cord NEMA L14-30p to L14-30r Generator Power Cord for Manual Transfer Switch, Portable Generators - China Locking Power Cord L14-30p L14-30r | Made-in-China.com
AC WORKS® L5-30 SOOW 10/3 3-Prong Generator Extension Cord – AC Connectors
parkworld 8 ft. 125-Volt 30 Amp 3-Prong Locking NEMA L5-30P Plug to 4-Prong L14-30R Generator Adapter Cord (2 Hots Bridged) - Yahoo Shopping
Champion Power Equipment 30-Amp RV Generator 30-ft / 1 3-Prong Outdoor Heavy Duty Locking Extension Cord in the Extension Cords department at Lowes.com
SEEUTEK 25 ft. 10/4 30 Amp Generator Extension Cord 4 Prong 125-Volt Indoor/Outdoor Extension Cord L14-30 with Lighted End Black BZ-1398 - The Home Depot