DescriptionMade from high-quality carbon steel galvanized, these link connector have high hardness and a long service life surface is zinc plated for good rust resistance and better performance. Widely used in construction industry aluminum frame structure.Features-Color: Silver.-Material: Carbon steel galvanized. -Size: About 10.00X1.00X0.50cm/ 3.93X0.39X0.20in. - They are simple to use and convenient to connect aluminum profiles straight lengthened connection between two profiles. -It is inserted into the pit of the butt joint of two profiles, and then tightened with set screws -Efficient and durable, flexible and practical. Used for aluminum extrusion profiles. -With a reasonable design, these link connectors can meet your different needs. -Aluminum profile straight line connector is widely use to build CNC routers, 3D printers, etc.