Constructed of heavy-duty steel for strength and durability, this attachment is compatible with Olympic bars with its 2” sleeve opening. The sleeve on this attachment is also shortened. Many other attachments like the MB-42 have a larger sleeve, limiting the load. With this attachment and its shortened sleeve, the user will be able to add more plates and test their strength even more. With 5 different grips, including removable high-density rubber handles, athletes can train targeted areas from multiple positions using the MB-42 Multi-Grip Machine Bar Attachment.