STAINLESS STEEL CLIPS: These package clips are made of stainless steel with hairline polish finish, very sturdy without breaking, long lasting, unlike those plastic ones . Smooth surface, safe to use LONGER GRIPPING SURFACE FOR VARIOUS BAG TYPES: The teeth part of the sealing clips for bag is about 2.7"/6.7cm wide, grip small, medium or large sized bags, thats no problem STRONG GRIP: We used a closure style like alligator teeth to reach an almost perfect closing, gripping very tightly on your food packages CONVENIENT TO USE: With comfortable handle, not hassle to use, it may need some strength to open it since it is very strong. Just one opening and closing, the metal clip bites tightly on the package WHERE YOU CAN USE THESE SEALING CLIPS: Tons of unfinished food and snack need the clips to reseal, anything else you need to keep fresh. No more stale chips or cookies and without having to waste a freezer bag. These clips also can be used to clip office paper, photos, or clothes. You can combine them with magnets, sticky pads, and other adhesive materials for even more great uses