Kai 4 1/2" micro-serrated patchwork scissors (SKU N3120SE). 3000 Series; series page lists heavy-duty high-carbon stainless steel. Official page: serrated blades to grip satin, silk, wool, and other slippery fabrics; also cotton patchwork layers and appliqué. Title on the official page is 4 1/2-inch; body copy on that page also says 4". Plastic blade cap included. Weight 1 oz. Specs from the kaiscissors.com 4 1/2-inch micro-serrated patchwork page and the 3000 Series page.

The small micro-serrated patchwork pair. Official model is the SE micro-serrated version of this size.