These premium-quality eyepieces increase the magnification of the Oberwerk BT-70-45 and BT-100-45 binocular telescopes. The 16mm eyepieces operate at 24x in the BT-70-45 and 38x in the BT-100-45. They have precision adjustable twist-up rubber eyecups, a wide 65° AFOV, with excellent sharpness to the edge of the field. The barrels are threaded to accept 1.25″ filters. Sold in pairs.