Material: It is Made Of, Durable, , Suitable for Indoor and Outdoor Environments, and Can Be Used for a Long Time. Easy to Install: It is Easy to Use and Install. Just Drill a Hole in the Wall, Put the Expansion Screw into the Hole, and Use a Wrench to Tighten the Nut of the Expansion Bolt outside the Wall Hole. Wide Application: Stainless Steel Expansion Screw Can Be Used in Concrete and Masonry, Suitable for Canopy Installation, Water Heater Installation, Air Conditioning Fixation, Chandelier Ceiling, Guardrail Installation, Industrial Engineering, Etc. You Will Get: Comes with 1 Pieces Sleeve Anchor Bolts, Including Nuts, Washers, and Spacers, Enough for Your Professional and Daily Use. Wide Application:Expansion screw bolts can be used in concrete and masonry. They are suitable for home decoration, air conditioning fixation, mounting canopy, water heater installation, industrial engineering and so on., Manufacturer: ZZABCDEGH