These heavy-duty sewing clips made from eco-friendly, non-toxic PS plastic provide the perfect pin-free solution for holding multiple fabric layers. Engineered with high-grade steel springs, they maintain consistent clamping force through hundreds of uses. The wide jaw opening easily accommodates thick materials like CORDURA®, leather, and heavy webbing, while the flat clip base ensures smooth, unobstructed feeding right up to the presser foot. Essential for precision sewing, crafting, binding, and technical textile assembly.