Product Specification: Product Name: 10pcs/set Black Straight Line Connector Length 3.9inch Joint Bracket with M5 Screws for 2020 Series T Slot 6mm Aluminum Extrusion Profile Material: Made of high quality carbon steel, high hardness and a long service life, fine workmanship Surface treatment: Galvanized Color: Black Dimensions(L*W*H): 100x10x4.5mm/3.9x0.39x0.18inch Screw Size: M5 Weight: about 24g/pcs This Straight Line Connector Brackets are suitable for 6mm T slot aluminunm profile 2020 series Function: Connect two alumnum profile together Strong connection function at inner of aluminum profile slot When it is installed, it is inserted into the pit of the joint of two profiles, and then tightened with set screws 2020 Series Straight Line Connector Joint Bracket Widely used for 3D printers, CNC Routers, CNC laser cutters, CNC plasma cutters, Robotics Projects, 3D carvers, Machine guards, workstations, etc Package Content: 10pcs Black Straight Line Inside Connector 40pcs M5 Screws 1pcs Allen key PLEASE NOTE: Due to different display screens and lighting effects, the actual color of the item may be slightly different from the color shown All merchandise we sell are in good quality and under examination before they are shipped.We will try our best to avoid any quality problem Any question or problem, do not hesitate to contact us,we will reply you within 24 hours