GEAR: 10 Position Sofa Bed Headrest Adjustable Angle Mechanism Hinge, , with Two Angle Bracket MATERIAL: metal, anti-rust and -, and sturdy to use, not easy to bend and break. APPLICATION: Suitable for adjusting Sofa backrest Bed Headrest Backrest or you can DIY for your own furniture. FEATURE: Lifting Rod Desk Desktop Adjusting Hinge Angle Hinge. NOTE: Mounting screws are not included. Product Name: Adjustable Angle Hinge Main Color: Bronze Tone Weight: 4950g Dimension: 24 x 3 x 1cm / 9.4-inch x 1.2-inch x 0.4-inch (L x W x H) Thickness: 4mm / 0.16-inch Adjustable: 10 Gear Plate Size: 6 x 5 x 0.22cm(+/-0.02)(L x W x T) Mounting Hole Size: 5.5mm / 0.22-inch (D) Package Contents: 6 Pair x Adjustable Angle Hinge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.