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Amazing Pentax XW 3.5mm 70 Degrees Planetary Eyepiece/ Argon Purged/Unboxing, Review, Day Light Use - YouTube
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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
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Amazon.com: Pentax 70516 SMC-XW 20 1.25-Inch Eyepiece for Telescopes and Pentax Spotting Scopes, black : Sports & Outdoors
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