The aluminum breadboard is a non-magnetic, cost-effective platform for optical devices, ideal for experiments and small optical system installations. Its anodized black surface minimizes light reflection. Featuring a 25mm x 25mm hole array with 12.5mm edge spacing, it allows for versatile component installation on both sides. 1. The platform surface adopts a matrix arrangement, and the aperture standard is M4/M6 threaded holes; 2. The hole spacing is 25mm * 25mm, the thickness is 10.1mm, and the flatness is less than 0.1mm; 3. The countersunk installation hole does not affect the threaded hole array at all, and the distance from the edge is 25mm; 4. The standard threaded hole array can be used to install various optical machines, optical tables, etc.; 5. Made of 7075 solid aluminum alloy precision machining, it is lightweight, easy to move, and has a flat surface that is not easily deformed; Color: Black Material: Aluminium Specification: 20*10*1.1cm Package Contents: 1*Optical Flat Plate Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.