SENQCIA Hi-Max riveted roller chain is manufactured in accordance with the ASME/ANSI B29.1 American roller chain standard. 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 50ft reel.