Orion 8707 High-Power 1.25-Inch 3x 4-Element Barlow Lens
4-Element 3x Barlow will give your 1.25" telescope eyepieces a triple-power boost. Ideal for high-power telescopic study of the Moon and planets such as Mars, Jupiter, and Saturn. Sophisticated fully multi-coated, 4-element lens design preserves the optical quality of your telescope and eyepieces for crisp views. Great for high-magnification lunar and planetary astrophotography. Brass compression ring keeps eyepieces securely installed without scratching, and the barrel is threaded for use with 1.25" Orion filters