Amazon.com : Metal M52 to M42 Male to Female 52mm to 42mm M52-M42 Step-Down Coupling Ring Adapter for Lens Filter : Electronics
M42 To M42 Coupling Adapter M42x0.75mm Male to Male Conversion Ring
Amazon.com : Metal M42 42mm 1mm Thread Pitch to T2 42mm 0.75mm Male to Female 42mm to 42mm Coupling Ring Adapter for Lens Filter : Electronics
M42 Screw Mount SLR Lens to Micro Four Thirds (MFT, M4/3) Mount Mirrorless Camera Body Adapter – Fotodiox, Inc. USA
Amazon.com : Astromania M42X0.75 Female to SCT Male Thread (2", 24 TPI) Telescope Adapter : Electronics
Amazon.com: Ring Adapter,Metal M42-M42 Male to Male Ring Adapter with M42x0.75mm Thread,for Filters,Easy to Installation
M42 To M42 Coupling Adapter M42x0.75mm Male to Male Conversion Ring
M42 To M42 Coupling Adapter M42x0.75mm Male to Male Conversion Ring
Amazon.com : Metal M40-M42 mm to 40 mm x 0.75mm 42 mm x 1mm Male to Female Step-Up Coupling Ring Adapter Converter : Electronics
StarPal M48*0.75 Male Thread to M42*0.75 Female Thread 5mm / M48*0.75 Male Thread M42*0.75 5mm Female Thread
Amazon.com : Metal M42 to T / T2 Male to Male 42mm to 42mm M42-T2 T Step Coupling Ring Adapter for Lens Filter Telescope : Electronics
Amazon.com: Ring Adapter,Metal M42-M42 Male to Male Ring Adapter with M42x0.75mm Thread,for Filters,Easy to Installation
M42 to M48 Male to Male Adapter
M42 To M42 Coupling Adapter M42x0.75mm Male to Male Conversion Ring
StarPal M48*0.75 Male Thread to M42*0.75 Female Thread 5mm / M48*0.75 Male Thread M42*0.75 5mm Female Thread
Amazon.com : Metal M42 to T / T2 Male to Male 42mm to 42mm M42-T2 T Step Coupling Ring Adapter for Lens Filter Telescope : Electronics
Amazon.com: Ring Adapter,Metal M42-M42 Male to Male Ring Adapter with M42x0.75mm Thread,for Filters,Easy to Installation
M42 Screw Mount SLR Lens to Micro Four Thirds (MFT, M4/3) Mount Mirrorless Camera Body Adapter – Fotodiox, Inc. USA
Amazon.com : Metal M40-M42 mm to 40 mm x 0.75mm 42 mm x 1mm Male to Female Step-Up Coupling Ring Adapter Converter : Electronics
Amazon.com: Ring Adapter,Metal M42-M42 Male to Male Ring Adapter with M42x0.75mm Thread,for Filters,Easy to Installation
M42 to M48 Male to Male Adapter
EYSDON M42 to M48 Conversion T Ring Adapter Male Transform to Female Thread Telescope Converter - AliExpress
