Bob's Knobs Celestron 6" SCT f/10 Stainless Steel Knobs
Bob's Knobs Celestron 6" SCT Metric Stainless Steal Knobs - C6SS
These stainless steel knobs from Bob's Knobs fit Celestron 6" (15cm) f/10 SCT versions, such as C6-A-XLT, C6-GT, C6-SE, C6-SGT, and others. All Celestron 6" SCTs have screws with metric threads, so make sure to check the knob treads fit with the telescope's screw threads.
They are made of silver stainless steel to protect from moisture corrosion and measure 12mm (1/2") in diameter. This makes the factory dust cap fit normally when the knobs are installed, though some early versions of the Celestron C6 SCT design leave little clearance between the dust cover and the secondary housing. If needed, please contact Bob's Knobs for a free set of spacers that attach to the ring around the corrector plate. This will move the dust cover slightly away from the secondary assembly.