These two machined aluminum knobs replace the standard right ascension and declination clutch collars on the GM-8, G-9 and G-11 mounts. Each has three handles that project out of the collar at a 30-degree angle. The handles give a more positive and precise grip on the clutches, particularly when wearing gloves. They make the clutch knobs easier to use, and give a greater and more subtle clutch eng . . .