Meade Instruments 07199-2 Series 4000 8 to 24-Millimeter 1.25-Inch Zoom Eyepiece (Black) Gives the widest viewing field along with extra sharpness and long eye relief Low astigmatism, spherical aberration and off-axis color Includes a soft rubber eye guard and a custom fitted bayonet mount Folds down for the convenience of eyeglass wearers and protects glasses from getting scratched Comes with a 1-year limited warranty