A flexible connecting rod is manufactured from a rigid material and having a substantially cylindrical hollow body, a leading segment with a securing area and a trailing segment having a trailing edge and a securing area. The body has at least one flexible center section, each having at least one slot to provide flexibility. The slot follows a sinuous, serpentine path to form a plurality of interlocking teeth that can follow a helical or a concentric path. Each slot has a proximal end spaced from the trailing segment and a distal end spaced from the leading segment. With multiple slots the proximal end of a slot can be spaced from, and separated by an inflexible section, or adjacent to, a distal end of a subsequent slot.