1.25" Double Helical Focuser+2"coaxial adapter

Double Helical Focuser:

1. High Precision double helical focuser for guider scope / finder scope Interface
2. The solution for telescopes or telephoto lenses with sluggish focusing
3. Item was made by Full metal, durable
4. Accuracy: 0.05mm
5. Interface: 1.25 inch w/ M42*0.75 male thread
6. Primary Mirror Interfaces: M36X1
7. Focusing stroke: 10mm
8. Minimum length: 43mm
9. Longest length: 53mm
10. Net Weight: 150g

2" Coaxial Adapter:

1. High quality 2" coaxial convertor for telescopes
2. Full metal Material
3. Interface: M48x0.75 Female thread
4. Primary mirror interfaces: 2 inch w/ M48x0.75 Female thread
5. Color: Black