Focal length; 9 mm; 18 mm; 34 mm; 3 sets; you can freely observe objects of different distances and sizes
1.25 inch / 31.7 mm; telescope general purpose aspheric eyepiece; outer diameter of eyepiece is 31.7 mm; suitable for 1.25 inch interface; it can provide wide vision and very good clarity
The lens provides a better sharp image with a multi-layer coating
Perfect for wide-view moon observations; medium-sized clusters; cloud-rich nebula and deep sky target; fully multi-layer coated; wide-angle 72 degree aspheric eyepiece
3x Barlow lens will increase the magnification of your 1.25 inches Extender telescope twice times