1.Material:Zinc alloy & copper 2.Color:black, blue, as required 3..Main switch with good quality,comfortable handle feeling, Features:Surface finishing: pickling, polishing, sanding, platingMain switch with good quality,comfortable handle feeling, flexible rotating, excellent durability Ambient temperature-40°C~+60°CMutual opening<0.1%Lock durability>50,000 timesBonding wire pull-out force> ...