These grommets are a game changer for any industrial and scientific application .The double deck design not only provides additional protection, but also increases the lifespan of the product. The material used ensures that they are sturdy and can withstand a lot of wear and tear. The only con would be that they might not be suitable for smaller projects. Overall, Fielect has provided a great addition to the grommet industry with these sturdy and durable grommets..