M68 spacer rings 3D printed in PETG (M42/M48/M54/M56 also available).
- Comes with 4 different thicknesses, 3 of each are included: 0.4/0.6/0.8/1.0 mm.
- Rings will have plenty of room to easily fit over the threads.
Nominal outer diameter is 75 mm, and inner diameter is 68.5 mm
Filed under: Eyepieces & Accessories