- Beam or Lens Color: Red
- Illumination Type: LED
- Set of three Apertura Secondary Mirror Collimation Knobs
- Replaces the secondary collimation screws included with Apertura Dobsonian telescopes
- Facilitates quick and easy Dobsonian collimation
- Requires no tools thereby preventing your telescope from acquiring damage
- Adapter Connector Type - Side A: 2"
- Adapter Connector Type - Side B: 2"
- Adapter or Spacer Length in mm: 80 mm