Bob's Knobs for Intes-Micro Alter MN76 Secondary: Precision Collimation Made Easy Designed for Intes-Micro Alter MN76 and More: Customized for Intes-Micro Alter MN66, MN68, MN76, and MN78 Maksutov-Newtonian telescope models. Part Information - Part: IMN76: Telescope Compatibility: Perfectly fits Intes-Micro Alter MN76 Maksutov-Newtonian versions. Knob Design: Constructed from black plastic, each knob is 10 mm (3/8”) in diameter, ensuring ease of use and accurate adjustments. Thread Material: Features durable stainless steel threads for a secure and lasting connection. Installation and Compatibility: Dust Cover Fit: The factory dust cover will continue to function normally with Bob's Knobs installed. Cosmetic Cover Removal: The cover over the factory collimation screws must be removed for knob installation. This cover is purely cosmetic and will not impact the telescope's operation. Enhanced Telescope Tuning: Ideal for astronomers with Intes-Micro Alter MN66, MN68, MN76, and MN78 telescopes, seeking a straightforward, tool-free method for precise secondary mirror collimation adjustments.