Features These brackets allow structural elements to be joined at a 90 degree angle and accommodate the standard wall thickness of the largest structural elements to ensure hole alignment. Compatible for Tetrix Robotics and Pitsco Company, perfect fit. Meet the part requirements of robot competition. The hole distance is 8 mm. The diameter of the big hole is 8.1 mm, and the diameter of the small hole is 3.8 mm. All parts are made of heavy duty aluminum material, lightweight yet durable，Make your robot stronger. Specification: Item Type: L Bracket Quantity: 2pcs Material: Aluminum Size: 27x32x32mm / 1.06x1.26x1.26in Thickness: 2mm / 0.08in Package List: 2 x Bracket Package List 2 x Bracket