SENQCIA Inspire Series SBR riveted roller chain is manufactured in accordance with the ASME/ANSI B29. 4 American roller chain standard for conveyor series double pitch chains. This series possesses large rollers that allow the chain to roll on conveyor tracks to reduce friction. Solid bushings and rollers offer exceptional performance and long life in a wide variety of applications. Chain pins are produced from a special chrome-moly alloy steel to improve strength. Solid cold forged bushings extend chain wear life and greatly reduce break-in wear. Packaged chains are pre-lubricated with high quality rust prevent oil and come with a necessary connecting link to join the ends. Offset links (used to shorten or lengthen a chain strand by 1 pitch) are also available and sold separately. This chain is packaged in a 100ft reel.