Mounting Rings (Set of 2) - 90mm (3.54")

High quality black mounting rings made of solid aluminum anodized material makes your telescope looks outstanding! These 90 mm, felt-lined mounting rings from William Optics are made out of solid aluminum, anodized in black, have white felt (not black as shown in some of the photos), will fit most 90 mm OD tubes, and all William Optics 80 and 90mm telescopes. A worthwhile investment if you want the best out of your GEM or Alt-az mount! Supplied with five threaded holes (external imperial threading 1/4x20; internal M6 metric threading) for mounting on most dovetail plates and WO dovetail plate (dovetail plate shown in photos above is not included) Equally holed on top to fit additional accessories Felt-lined to protect even the most delicate telescope finish Very elegant, anodized black version Nice, comfortable, large knobs with teflon paint protection on locking end 2 hexagonal metric M6 mounting screws provided These solid rings will keep your telescope in perfect alignment. A telescope's pointing accuracy is only as good as the mount and rings it comes with: saving on rings is not always a wise choice!