Feature:1. The main parts are made of aluminum meterial, strong and durable2. Infinite positioning possibilities can achieve maximum flexibility in your own design3. Widely used in construction industry aluminum frame structure, very convenient4. 2-hole placement is designed for vertical joints, very practical5. Adopt advanced technology with excellent craftsmanship to bring smooth surface, which will not hurt your hands in workSpecification:Item Type: Joining PlateMaterial: AluminumSurface: OxidationPurpose: Used for linear extension connection/overlapping connection between profilesModelLength(approx.)Width(approx.)Hole distance(approx.)Thickness(approx.)2020-2 Hole40mm / 1.6in18mm / 0.7in20mm / 0.8in4mm / 0.2in3030-2 Hole60mm / 2.4in28mm / 1.1in30mm / 1.2in4mm / 0.2in4040-2 Hole80mm / 3.1in38mm / 1.5in40mm / 1.6in6mm / 0.2in.Package List:10 x Joining Plate