Kohree NEMA L5-30P to L14-30R Adapter Cord

Kohree NEMA L5-30P to L14-30R Adapter Cord - $39.00 delivered
3 Prong to 4 Prong Generator Adapter, STW 10 AWG 12in, 30 Amp L5-30P Male Generator to L14-30R Transfer Switch Female Adapter.
30 Amp NEMA L5-30P twist lock male plug to 30 Amp NEMA L14-30R generator transfer switch outlet. Constructed with 10/3 gauge wires, rated at 125V and Max 3750W. 12in in length. 
A must if your power generator is without an L14-30R outlet. Perfect for powering your home power system from the generator. 
No assembly required. The male end has a twist and lock design to prevent itself from accidentally falling off. 
3 prong to 4 prong generator transfer adapter is made with 100% copper wire, which is more conductive; flame retardant and UV resistant PVC sleeve makes it sturdy and long-lasting.