ESSENTIAL CAR PARTS - For your safety, please check and replace the battery switch key in time! Whether you are a professional mechanic or an ordinary car owner, this battery cut off switch key is your right-hand man. It is your protection for safe and smooth driving and is definitely a must-have car tool for every car owner. EASY TO USE - We adopt a bright and simple appearance design, so you can quickly find its location, convenient for you to use the operation and save your precious time. Just gently remove the aging battery cut off switch and insert the new car part to install it. No more need to worry about tedious operation steps and wiring harness connection problems. RUST & WEAR RESISTANT - Our battery disconnect switch key is made of superior quality ABS, which has excellent impact and rust resistance, and can withstand working in high-pressure environments. Meanwhile, the solid brass nut is tightly connected to the stud, which is not easy to lose and slip off, providing you with a long service life! BUYER NOTICE - This RV battery disconnect switch measures 1.85x1.70x0.43 inch, there is a stud on the bottom that measures 14 mm/ 0.55 inch, and the applicable locking hole measures 4 mm/ 0.15 inch, there are two pieces of products included in the package, please confirm and check the size of the fitment before placing an order! SCOPE OF APPLICATION - This battery shut off switch has a wide range of uses, it can be used to cut off the power to a car that has not been used for a long time to avoid draining the battery, so that you can protect the performance of your car! Apply to most cars, trucks, vans, RVs, etc. on the market. This is your essential car accessories!