These diagonal rods are 210mm from tip to tip. Using these with the 10mm Magnetic Ball Joints will produce a rod that is ~222mm from centre of ball to centre of ball. The length can be adjusted to longer by winding the thread of the joint out and holding in place with a thread locking compound. The ends are CNC machined 6061 aluminium. They have an M3 thread in either end.

The M3 thread makes the rods suitable for different joint setups. They can be used with either magnetic universal joints or tie-rod joints. 

Each rod weighs 6g.