Optec Sure-Lock Knobs for Celestron Edge HD

  • Replacement knobs for Edge HD Telescopes
  • Operate at a higher level of efficiency than the standard knobs
  • Use up less space, allowing a wider range of accessories with your Edge HD
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  • Regular price $80.00

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Optec Sure-Lock Knobs for Celestron Edge HD

The Sure-Lock Mirror Support Clutch Knobs from Optec are a new accessory that exists to replace the mirror support clutch covers on the Celestron Edge HD. These new knobs are fashioned from solid brass, and screw directly onto the mirror support clutch where the standard black conical lock nuts would. Due to the large diameter and knurled design these knobs both fit tighter and hold the primary mirror position more securely than the standard nuts would.

These knobs also use up less of your telescopes back focus than the standard knobs, leaving enough room to use accessories like the TCF-Leo Low Profile Focuser from Optec with an Edge HD OTA. 


Warranty1 Year Warranty


  • Two (2) Sure-Lock Knobs
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4.0 Based on 1 Reviews
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Exactly as advertized but a bit heavy

Good, solid and serve the purpose they were designed for. Glad they exist. Only complaint is that they could have milled or lathed out a lot of metal and they would be just as sturdy, but a lot lighter. Still, a good device!