This Valterra Mighty Cord (TM) 30 amp Power Supply Cord has 4 prong with twist lock. It measures 25 foot length.• NEMA Standard Male: L14-30P• NEMA Standard Female: L14-30R• End Type Male: 4 Prong• End Type Female: Female End• End Rating Female: 30 Amp• Wire Size: 10/3 AWG• Length: 25 Feet• Jacket Color: Black• Jacket Material: Rubber• With Carrying Strap: No 4 prong receptacle end 25' length Provide Additional Cord Length For Longer Hook Ups | Valterra Mighty Cord Generator 30 Amp 4 Pole Extension Cord, 25'