Pentax SMC XW 20mm Eyepiece (1.25") 70516 B&H Photo Video
Amazon.com : PENTAX smc PENTAX XW30-R, 2-Inch Eyepiece for Telescopes High-Performance Eyepiece with an Extra-Wide 70°Apparent Angle of View, 20mm Eye Relief Original Multi-Layer Coating All-Weather Made in Japan : Electronics