The 9102NF Small Angle Plate is designed to make quick, convenient setups on the optical table. The black anodized, machined aluminum has threaded and clearance holes for 8-32 (M4) and 1/4-20 (M6) standard fasteners. Four 2-56 threaded holes allow mounting of our tiny mirror mounts. The small angle plate is compatible with both Imperial and metric fasteners.