Con-Rod Aligner Model ARA 350 Con-Rod Aligner Model ARA 350 is equipment for checking the Twist and Bend on a Connecting Rod. The bores of any reconditioned con-rod should the Straight as well as Parallel. TECHNICAL SPECIFICATIONMODEL ARA 350DiameterMinimum40 mmMaximum80 mmMax. Length of Con-Rod350 mm Watch Videos Download PDF