SENQCIA Ultra-Max Heavy Series cotter pin type connecting links are manufactured in accordance with the ASME/ANSI B29.1 American roller chain standard. The link plates of the heavy series are one size thicker than standard roller chains providing additional strength in heavy duty applications. Split cotters are supplied with slip fit closing plates for ease of assembly in the field. Connecting links are used to connect the ends of the roller chain strand into an endless loop. Each connecting link is individually packaged in a sealed plastic bag.