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40H Heavy Duty Roller Chain Offset Link (4PCS)-Brand New item from the factory-Free Shipping within the Continental of United States-Same business day order processing before 12:30PM PDT-Satisfaction Guarantee-Easy to installQuantity Per Order: 4 PiecesMaterial: Carbon SteelAverage Tensile Strength: 4000 lbsInner Plate Depth: 0.472 InchPitch Size: 0.500 InchPin Diameter: 0.156 InchPin Length L Max: 0.740 InchPin Length Lc Max: 0.783 InchPlate Thickness: 0.080 InchRoller Diameter: 0.312 InchWidth Between Inner Plates: 0.309 InchWeight Per Foot: 0.549 lbsProduct Description: All of our chain products have gone through stringent process measures for Best Quality! This includes heat treatment, which ensuring the optimum ware life and toughness for all component parts. Solid hardened and shot peened precision rollers are standard on most of our chains. The bushings provide a smooth roller bearing effect reducing the impact load as the chain engages the Automotive|Motorcycle & ATV|Parts|Drive Train|Sprockets tooth. During chain assembly, all chain components are oriented to ensure pins, bushings and side plates are correctly positioned for optimum chain strength and long life. Assembled chains are then dipped in a hot lubricant. This lubrication and the process in which it is applied greatly improve the ware life capacity of the chain and further protect it from the effects of the environment. All of our chains are factory preload. They are pretested to support and maintain the expected load the chain will see when in use. This helps align the chain parts which will minimize the initial elongation. This will drastically increase the life of the chain.