We are proud to offer this DieHard product line: Diehard Heavy Duty. DieHard Heavy Duty batteries are built to withstand the demands of commercial use. Trust Diehard Heavy Duty batteries for all of your fleet, tractor, and truck needs. The reinforced container provides resistance to extreme work conditions. Maintenance free performance for maximum convenience. Manufactured to reduce active material and plates fallout, improving battery vibration resistance. Grid design reduces internal short risks and increases battery life. The heavy duty internal connectors ensure a solid connection between plates and top lead, enabling better internal electric flow. Product Features:Handles make installation and transportation easierHeavy duty wing nut terminalLow maintenance battery with durable polypropylene case and coverTough deep-pocket envelope separators reduce shorts and extend service life