describe Sturdy and DurableMade of high quality stainless steel and rubber. Not hollow inside, strong but not rigid, the door stop won't bend when you push too hard. These tough metal door stops won't rust or warp over time Stable and Non-slipThe door wedge features a unique angle design and non-slip base, which provides ultimate grip and helps hold the door firmly in place, preventing the door from closing due to sliding or slipping Health and Environmental ProtectionNon-toxic and tasteless, ensure the health of your family, soft to ensure your floor and door will not be damaged by using the previous PVC material Where to UseSuitable for all doors and floors. It has good adhesion to tile, carpet, laminate flooring, wood doors, metal doors, glass doors, self-closing doors, heavy doors, residential doors, standard doors, large doors, commercial doors. Ensure the Safety of Your Loved OnesGreat for families with kids or pets. Eco-friendly, no irritating smell, safe for your kids, pets and family. Whether blocking side doors, wide doors, kitchen, bedroom, home or office doors, or keeping windows open, this large door stop set has multiple uses. grey