SENQCIA Inspire Series™ SBR® riveted roller chain is manufactured in Japan in accordance with the ASME/ANSI B29.1 American roller chain standard. These solid bushing/solid roller chains offer exceptional performance and long life in a wide variety of applications. Chain pins are produced from a special boron steel to improve strength. Solid cold forged bushings and a patented pin treatment extend chain wear life and greatly reduce break-in wear. Packaged chains are pre-lubricated with high quality wax-type grease 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 on a 50 ft reel. SENQCIA Inspire Series™ SBR® Roller Chain, Riveted Standard, 1 in Pitch, 0.312 in Pin Dia, 1.29 in Pin Length, 5/8 in Roller Dia, 5/8 in Roller Width, 0.921 in Plate Height, 0.126 in Plate Thickness, 1 Strand, 17650 lb Average Tensile, 50 ft Overall Length, Carbon Steel