Description: Bipedal Steering Support Robot Mechanical Arm Stent Frames for Robot Robotic Arm Rustproof material: The metal corner brackets were made of 304 stainless steel, protect against corrosion and rust. Thicken design: shelves brackets were upgraded the thickness to 0.1 in, different with other items on market, more strong for durable working life. Strong and steady. Easy to install, beautiful and practical structure After Sale maintenance and customer service: Our company provide 24 months warranty service.So feel free to contact us if you have any question Specification: Material: stainless steel Surface treatment: sandblasting oxidation Size: 90x25x42mm/3.54x0.98x1.65inch Package Includes: 1 Piece Robot steering gear bracket U-beam