This 1.25 inch, 12 mm eyepiece from Celestron has a wide field of view, enhancing your view of the night sky and providing sharper images with their 6-element multi-coated optics. Extendable, twist-up eyepieces are easy and comfortable to use, even with glasses. This series features a no-slip, rubber grip ring for secure handling in all conditions. You will find this to be a  high quality eyepiece at an affordable price.