Feature: 1. Small Four-Post Module Mounting Base: Each of the four raised posts has an M4 threaded hole on each surface. These threaded holes provide a highly flexible and stable installation and fixing method. 2. Center Hole: The diameter is 14mm. On one side of the center hole is a notch with a diameter of 16mm and a depth of 1mm, which can be used to install flanged spherical bearings. 3. Multifunctional: The width is 27mm and the length is 43mm. It can be installed on both sides of the beam and in the notch space of the U-shaped beam, and provides Zhouyu standard hole patterns on multiple surfaces for fixing other components. 4. Applicability: Used as parts of robots or mechanical models, etc. Translation and tilt components for horizontal surface installation. 5. Versatile: Servo mounts for shoulders, knees, or other joints such as humanoid robots and biped robots. Specification: Item Type: Robot Bracket Material: Zinc Alloy Mounting Base Size: Approx. Length: 43 mm / 1.7 in Width: 27 mm / 1.1 in Height: 12 mm / 0.5 in Center Opening: Approx. 14 mm / 0.55 in Threaded Hole Model: Approx. M4 x 0.7 mm / 0.03 in. Package List: 2 x Robot Bracket Note: Match the correct size before use.