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