Amazon.com : Andoer M52-M42(17-31) 17mm-31mm M52 to M42 Mount Camera Lens Adapter Ring Macro Extension Tube Helicoid Lens Focusing Adapter Ring for Macro Photography : Electronics
T2 T (42mm x 0.75) Male M42 to M52 (52mm x 0.75mm) Male Telescope Ring Adapter | eBay
Amazon.com: Astronomical Telescope Accessories M56-M42/M52 Female Thread to 42 T2 Thread Adapter Compatible with Takahashi FC60,FSQ85 : Electronics
ZEISS DTC-A 62 Adapter
Amazon.com : Metal M48 to M52 Male to Female 48mm to 52mm M48-M52 Step-Up Coupling Ring Adapter for Lens Filter Telescope : Electronics
EYSDON 2" Telescope T2 Camera Adapter M42 T-Ring T Tube with M48 Filter Threads and M54*0.75mm Outer Pitch - AliExpress
0.75 Thread Telescope Eyepiece Adapter 2 Inch/1.25 Inch to M42 0.965 Inch to M42 | eBay
Amazon.com: Astronomical Telescope Accessories M52 Male Thread to M48 Female Thread Adapter : Electronics
Blue Fireball M56 Female & M52 Female to M42 Male Thread Adapter (For Takahashi FC-60) # M-23
Baader M68/S52 Adapter for Wide-T-Rings # TRING-S52/M68 2458252
M48 Male to M52 Female Threads T-Ring Adapter
ZWO 2-in to 1.25-in Filter Adapter Ring for Filter Wheels and Drawers | High Point Scientific
Amazon.com: Telescope Accessory Set M52 Female to M48 Male Adapter S8205 Telescope Camera : Electronics
EYSDON 2" Telescope T2 Camera Adapter M42 T-Ring T Tube with M48 Filter Threads and M54*0.75mm Outer Pitch - AliExpress
Female Thread to Male Thread M48 M42 SCT M52 M54 T T2 Astronomical Telescope Photography Adapter Ring Accessories M42x0.75 - AliExpress
Baader DT-Ring SP54/M52 for DT54 Adapter & Hyperion Eyepieces
Variable Adapter Extension Tube M42 to 1.25 Inch / to 2 Inch f/ Telescope Camera | eBay