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. -Color:Black-Material:Aluminum alloy-Size:17.00X14.00X2.20cm/6.68X5.50X0.86in- This ladder hinge 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 .- Ladder hinge is made of aluminum alloy, not to rust, sturdy and durable, can serve you well.- Ladder hinge is to set up and use, even for those with limited with ladders.- Attic ladder hinges provide as safe and stable solution to your ladder, adds stability and prevents damage : 1 x hinge8 x screws8 x nuts