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Knobs for C8 f/10 Post-1980 Secondary with Standard Collimation Screw Threads
Fits: Celestron 8” (20 cm) f/10 post-1980 SCT with factory Allen or silver Phillips collimation screws, with or without Fastar secondary with silver collimation screws (C8 black, or gray; Ultima 2000; NexStar 8; others). This includes the post-2000 orange-tube. Will not fit pre-1980 orange tube or most scopes with black Phillips factory collimation screws.
Knobs: Black plastic, 13 mm (1/2”) diameter
Threads: Black anodized aluminum alloy