The Clamp adopts a Screw thread design, which can freely control the clamping range. The thread is not only silky and non blocking but also has a large torque which ensures a strong clamping effect. Ideal for heavy duty application. Advanced frame design resists flexing and bending. This is made of extruded engineering plastics and provides a glare free evenly distributed light; the batten is suitable for on a ceiling or wall and is available only in white light; the luminaire is recommended for corridor lighting, home lighting etc.