Amazon.com: PENTAX smc PENTAX XW40-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 : Sports & Outdoors
Pentax XW 30mm, 20mm, and 14mm Review -
Pentax 7mm XW extra wide angle eyepiece | Astronomics.com
Pentax | Eyepiece smc PENTAX XW 7 – PENTAX - Official Store