Comparison : Item # CAL3-470-2.0(mt.50), CAL Series - Aluminum (Metric)
Item # CAL3-580-3.3(mt.50), CAL Series - Aluminum (Metric)
Item # CAL3-470-2.0(mt.60), CAL Series - Aluminum (Metric)
Item # CAL3-580-3.3(mt.60), CAL Series - Aluminum (Metric)
Item # CAL3-470-2.0(mt.70), CAL Series - Aluminum (Metric)