Product Description 20PCS Battery terminal cover Boots Insulating protective Lug cap for car Marine Commercial Power Sports 12x20mm This car battery insulating protective cover total for 20 pieces. It made of heat-insulating flexible rubber material and designed as an angled cover tube.Good covers protector cap for car batteries. This flexible Battery Terminal connector covers is include for 10 pieces of red car battery cover and 10 pieces of black car battery cover. You can use red battery terminal cover to represent positive and black battery terminal cover to represent negative. Best for Car 4s shop work. This is an angle type Protecting Insulate connector cover, suitable for a maximum terminal diameter of 20 mm; suitable for the largest cables. The diameter is 12 mm and the product size: 20x12 mm.Avoid selling the wrong product, please check the size when you purchase it. thanks for your understand. These battery terminal cover can slip over the battery cables and cover the battery terminals to prevent accidental shorting and connection corrosion, protecting your vehicle, electronics and electrical system (starter, alternator, etc). These car battery cover are ideal for many applications , for vehicles including: Car, Truck, SUV's, Boat, Motorcycle, ATV, Scooter, Generators, Snowmobile, Commercial, Industrial, Stand-by Power, Agricultural, Military as well as many other battery and battery cable applications. Product Description Car battery cover Negative Positive Terminal Covers Cap Boat Insulating Protector Protects alternator and electrical system from shorts Reduces risk of battery explosion caused by accidental sparks Protects Cable, Terminal and Connectors from grease and debris High temperature PVC construction rated at 105C Color coded for easy polarity identification It is total for 20 pcs, size : 20 x 12 mm Battery cover Color: red + black battery terminal heat shields, PVC cable ear protectors, suitable for automotive and commercial and electric sports, thermally insulated rubber cover skin tool parts Material: Insulation rubber skin Product size: As shown Product features: It is made of heat-insulating and protective flexible rubber material and designed with angled smoke pipe. An insulating cover that protects the corner terminals. The cover is easily worn after rolling up the terminals. The sleeve prevents dust from entering the cable end. Packing list: 1 package (20PCS)Black red battery insulation cover