ZWO 1.25" Helical Focuser (ZWO-HF1.25)

Makes a great fit together with ZWO OAG and ASI Mini Series Cameras. Can also be used for other purposes when an exact focus is required. This ZWO model doesn't rotate your camera when you are adjusting focus and it is super economical.

Specifications 

• Inner Diameter: 1.25" 
• Stroke: 6mm
• Adjustment Accuracy: 0.1mm
• Top Male Thread: M42x0.75
• Bottom Female Thread M42x0.75
• Minimum Height: 48.5mm
• Weight: 80-100g