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 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, as well as many other battery and battery cable applications. 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. 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 battery terminal heat shields, PVC cable ear protectors, suitable for automotive and commercial and electric sports, thermally insulated rubber cover skin tool parts Specifications: Condition: Brand New Material: Insulation rubber skin Color: Black It is total for 20 pcs, size : 20 x 12 mm Battery cover Color: black Packing list: 20*Black battery insulation cover