Bob's Knobs for Intes-Micro Alter MN84 Secondary: Streamline Your Collimation Process Tailored for Intes-Micro Alter MN84: Specifically designed for Intes-Micro Alter MN84 Maksutov-Newtonian telescope models. Part Information - Part: IMN84: Telescope Suitability: Perfectly compatible with Intes-Micro Alter MN84 Maksutov-Newtonian versions. Knob Design: Made from black plastic, each knob is 10 mm (3/8”) in diameter, facilitating effortless and precise adjustments. Thread Material: Features durable stainless steel threads for a secure and reliable fit. Installation and Usage Notes: Dust Cover Compatibility: The factory dust cover will continue to fit normally with Bob's Knobs installed. Secondary Cover Removal: The cover over the factory collimation screws must be removed for knob installation. This cover is purely cosmetic and does not impact telescope operation. Enhanced Telescope Maintenance: Ideal for owners of the Intes-Micro Alter MN84 telescope seeking a simple, tool-free solution for accurate secondary mirror collimation adjustments.