Kai 6" micro-serrated patchwork scissors (SKU N3160SE). 3000 Series; series page lists heavy-duty high-carbon stainless steel. Official page: micro-serrated blades to grip satin, silk, and slippery fabrics; also cotton patchwork layers, appliqué, and wool. Plastic blade cap included. Weight 1.7 oz. Specs from the kaiscissors.com 6-inch micro-serrated patchwork page and the 3000 Series page.
The 6-inch micro-serrated patchwork pair. Longer run than the 4 1/2-inch patchwork pair.