Intended use - metal buttonholes are light, more used for decoration, and cannot withstand heavy pulling. This grommet kit is very suitable for materials with a thickness of 1-3mm, such as leather, tarpaulins, shoes, elastic bands, paper cards and hanging handicrafts. Not suitable for fabric or cloth. Portable and hand-held punch pliers - These hand-held punch pliers have a special design and are made of metal, which is comfortable to hold, easy to use and effortless. But please don't push too hard, the handle bend. The grommet kit is light and not suitable for heavy duty., Weight: 0.45415225972 Pounds, Manufacturer: Pomoflexi