1.Size: iron: 55mm x 44mm or 2.2 inch x 1.7 inch (L x W) Maximum extension length: 135mm or 5.3 inch Distance between 2 holes: 40mm or 1.6 inch The thickness of the iron sheet: 3mm 2. Material:rust-resistant, sturdy and durable 3. Sofa connectors are made up of two parts, which are connected by the Triple-cornered shape nail, the teeth part can be extended and tightened, can be stretched enough length to let you free to adjust and place sofa 4.This sofa connector can be used to connect and adjust furnitures in different positions and angles. It can also be hidden under couch by changing the angle if not in use. 5.Suitable for fixing different style combination sofa, please make sure that the connection surface of your sofa bottom is not less than 2 inches wide colour:Silver and black Material:iron Package Contents: 4 x Sectional Connectors Only the above package content, other products are not included. Note: Light 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.