Features: 1.30Amp power inlet plug connector, with cover and ring for regulation and waterproofing purposes, can keep the cable secure. 2.Designed to protect your cable connector, ensuring a secure connection for RV, trailer, caravan, marine vessels and other outdoor applications. 3.Twist lock connector allows quickly cable connecting into the input, side grips design for easy and secure connection. 4.Bright yellow rubber cover+heavy duty black plastic ring, keeps a weatherproof seal, good sealing, no leakage, has long service life. 5.30Amp 125 V twist lock connector with cover, cord can be removed and stored, no opening for mice or insects to enter and break. 6.Suitable for 8?3 AWG heavy duty, round plug cord (Type S), can work with a female cable connector with the same 30A 125VAC configuration to fit other application. Specification: Item Type: Cord Connector With Cover Ring Material: Plastic Total Mounting Length: Approx. 7.5in Cover and Ring ID: Approx. 1.7in Cover and Ring OD: Approx. 3in Deep Inside: Approx. 3in Outer Length: Approx. 5in Connector Size(Measurement on Face): Approx. 1.7in Rose to the back where the between the wires adds 0.25 inches (2 inches wide); total length is 3.9 inches (3.9 in) How to Use:(Easy to Use) 1. Replace the end on your existing power cord with the 30 Amp Locking Connector with Boot and Ring. 2. Remove the housing by loosening the 3 screws on the face of the device, slide the included weather-resistant boot over the cable, and slide the housing over the cable. 3. Strip the outer jacket of the cord and each individual conductor. 4. Insert all the wires into the proper color-coded terminal pockets. 5. Tighten the terminal screws and strain relief screws. 6. Slide the housing over the connector body, tighten the assembly screws, and slide weather-resistant boot over the complete assembly.