The package comes completes with all necessary hardware, making installation a blow for enthusiasts or professional installers seek a Stable door closing solution This door Close features adjustable spring tension mechanism, easily fine with the included hexagonal, ensuring a soft and quiet door Closures each time Suitable for homeowners, managers, and hotel maintenance staff look to enhances security and maintain quiet environment by automating their door closing process the convenience of a closing door with this Automatic Door Close, crafted from steel for rusts resistance and durability Excellent for both indoor and outdoor use, this door Close is Multifunction for garden gate, room door, and various other setting where a weight ranges of 20-40kg is within the door specifications, Manufacturer: SHANGYAKEJI