Orion 05341 0.965-inch to 1.25-inch Telescope Eyepiece Adapter This step-up adapter lets you use 1.25 inch eyepieces with telescopes that normally require .965 inch optics Upgrade that old dust gathering .965 inch telescope to use modern 1.25 inch eyepieces and accessories An inexpensive means to significantly increase functionality of older telescopes Made of anodized aluminum Compatible with .965 inch telescope focusers and diagonals