Plastic clamps and clips are commonly made from general-purpose plastics (listed as "plastic" in some product descriptions), ABS (Acrylonitrile Butadiene Styrene) for higher strength and durability, and heavier-duty resin materials used in larger trigger and spring clamps for added rigidity.
Many plastic clamps include comfort and anti-slip features such as soft two-component (rubberized) handles on trigger clamps and soft, non-slip grips on bag clips to make opening and clamping easier and more comfortable.
Warranty coverage varies by manufacturer and product. Some plastic clamps come with a lifetime limited warranty, while others carry a one-year limited warranty. Check the product listing or packaging for the exact warranty terms and any conditions.