The series of Kinematic Lens/Mirrors Lockable Holders,GCM-0808,is designed to mount a lens or mirror. The product offers two-axis tilt position adjustment. The tilting adjustment is achieved by precision fine screws and the tilting position can be locked by a small axial locking screw on each of the adjustment screws. The total tilting range in each axis is ±4°.The series contains a range of sizes to accommodate for different standard diameters of lenses or mirrors. There is a M4 tapped hole on the holder for connecting to a post mount or other products.