Aviation snips HTSN0110L are the go-to tool for cutting sheet metal. They can typically handle up to 18 gauge CRS (cold rolled steel) or 22 gauge SS (stainless steel).
"Unique design two tone soft handle
Aviation snip (Left)
Length:250mm(10"")
Max.cutting thicness:
Carbon steel ≤1.2mm
Stainless steel ≤0.7mm
Packed by half double blister"