Features: It is made of high-quality solid aluminum alloy, which is light in weight, easy to move and not easy to deform. Standard M6 threaded hole for table top array, hole spacing 25*25mm, thickness 13mm, flatness <0.1mm. The standard hole spacing of the threaded hole array facilitates the fixing of various adjustment frames, displacement stages, optical benches, and the like. The breadboard with a width of less than 450 mm has 8 countersunk mounting holes. The surface of the breadboard is anodized and blackened to minimize surface reflection. There is a standard 1 inch (25mm) through hole array. (1/2 inch (12.5mm) from the edge of the breadboard) The breadboard can be mounted vertically (or perpendicular to the mounting surface) through a variety of 90° mounting plates. (single breadboard does not include vertical brackets) Specifications: Material: Aluminum Dimensions: 30 x 30 x 1 Colour: Black ONLY Note: Screws not included