Features Twist Locking: The generator female plug adopts twist lock design, which can effectively prevent loosening or falling, largely improve the safety. Reliable Work: The 3 pole 4 wire twist lock connector with highly conductive copper part and sturdy nylon base ensures firm and stable connection. Practical Use: Can be widely applied for the electricity and power of trailers, recreational vehicle, motorhomes, cars, boats, ships, home and more. Applicable Wire: Suits perfectly for 4AWG-8AWG S, SO, SOO, ST, STO, STOO, SOW, SOOW, STW, STOW, STOOW, STOOW, SE, SEO, SEOO, SEW, SEOW, SEOOW, etc. Easy to Install: Equipped with stress relief device, clear wiring terminals and color coded positive crimping locking clamp for easy installation. Specification: Item Type: Generator Female Plug Model: ED-RV129P Material: Nylon, Copper Plug Specification: NEMA SS2-50R Voltage: 125V 250V AC Maximum Power: 6250W, 12500W Maximum Current: 50A Frequency: 60Hz Applicable Wire Size: 4AWG-8AWG Applicable Wire Types: For S, SO, SOO, ST, STO, STOO, SOW, SOOW, STW, STOW, STOOW, STOOW, SE, SEO, SEOO, SEW, SEOW, SEOOW.  Package List:1 x Generator Female Plug 1 x User Manual Package List 1 x Generator Female Plug 1 x User Manual