M42x1 female thread to 1.25" telescope eyepiece adapter | eBay
Amazon.com : Astronomical Telescope Eyepiece Adapter - 0.965 Inch Mount to 1.25 Inch Mount Adapter - Aluminium Alloy 1.25 Inch TMounted Adapter Ring : Electronics
Meade 6.4mm Series 4000 Super Plossl Telescope Eyepiece - 07170-02 - Telescopes at Telescopes
Amazon.com : SVBONY SV147 Telescope Eyepiece 1.25 inch 10mm PL Telescope Accessory Astronomy Gifts with Filters Thread : Electronics
Apertura 40 mm 1.25" Plossl Eyepiece | 40mm Plossl Eyepiece at High Point Scientific
How to Choose Eyepieces for Your Astronomy Telescope