The KAI 9" Pinking Shears are strong and light for even the toughest of projects. The comfortable and lightweight handle, as well as the stainless steel blades, make this a necessary addition to your collection. Cloth edges that are unfinished will easily fray, the weave becoming undone and threads pulling out easily. The saw-tooth pattern does not prevent the fraying but limits the length of the frayed thread and thus minimizes damage.