. 1FT Protective Extender NEMA 6-20P Plug to 6-15/20 Outlet with 20A Breaker The cord is super durable and typically used with construction and/or industrial equipment.
3-Prong 30A Dryer Plug to 4-Prong Dryer Female Connector Adapter It has NEMA 10-30P 3-prong dryer plug, usually seen in older home's dryer outlets, connecting to NEMA 14-30R, 4-prong female outlet. The cable is STW, 10/3, 30 Amp copper wire with a 600 Volt anti-cold weather jacket..
It is a NEMA TT-30P to a NEMA TT-30R. It can be used for RVs, food trucks, and even emergency power. 10ft 30A 125V NEMA TT-30 RV Rubber Extension Cord With Handle The cord is flexible and durable as well as weather and water-resistant.