Comparison : Item # CAH2-470-2.0, CAH Series - Steel (Metric)
Item # CAH2-580-3.3, CAH Series - Steel (Metric)
Item # CAH2-470-2.0(mt.60), CAH Series - Steel (Metric)
Item # CAH2-580-3.3(mt.60), CAH Series - Steel (Metric)
Item # CAH2-610-4.2, CAH Series - Steel (Metric)