Bob's Knobs Sky Watcher 5” to 12” Newt secondary

Bob's Knobs for Sky-Watcher Newtonian Telescopes: Secondary Collimation Simplified Secondary Collimation Made Easy: Elevate your Sky-Watcher Newtonian telescope's collimation precision with Bob's Knobs. Our specialized knobs are designed for secondary collimation on Dobsonian mount configurations, ensuring optimal telescope performance. Part Details - Part: CNsec30 or CNsec35: Enhanced Control: Achieve precise secondary collimation with black plastic knobs featuring a 13 mm (1/2”) diameter and stainless steel threads. Take full command of your telescope's secondary mirror alignment. Tailored Lengths: Choose between two screw lengths - 30 mm and 35 mm - to perfectly match your telescope's aperture size. Knobs with 30 mm screws are ideal for apertures up to 10", while 35 mm screws are recommended for apertures of 12" and larger. Versatile Compatibility: These knobs are compatible with a range of Sky-Watcher Newtonian telescopes, including 5”, 6”, 8”, 10”, and 12” apertures. Co