The step ladder foldable hinge is made of aluminum alloy materials, ensuring durability and longevity. The hinge is a versatile and convenient, suit for any household or workplace. The hinge mechanism allows for smooth and effortless folding and unfolding of the ladder. Features -Color:Black -Material:Aluminum alloy -Size:17.00X14.00X2.20cm/6.68X5.50X0.86in - This ladder hinge features a convenient design with an internal damper for smooth and quiet operation. - Foldable design is unique, light and flexible, convenient and practical, ladder hinge will be your good choice. - Ladder hinge is made of aluminum alloy, not easy to rust, sturdy and durable, can serve you well. - Ladder hinge is easy to set up and use, even for those with limited experience with ladders. - Attic ladder hinges provide as safe and stable solution to your ladder, adds stability and prevents damage Packing list1 x hinge8 x screws8 x nuts