SENQCIA Inspire Series 304 stainless steel roller links are manufactured . They offer excellent resistance against many forms of chemical attack and operate in temperatures ranging from -250 to +750 degrees F.These component parts are available to be installed in the field as needed. Two connecting links (sold separately) are required for field installation to repair damaged parts or lengthen existing strands. Note that this particular chain size is rollerless so that the link has a fixed bushing rather than a roller