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

Our #: PAMA-WO-M-M80R-B
Mfg #: M-M80R-B
Our Price: $148.00
Free shipping for this item in the US
More Info

Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.

US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.

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In Stock (9 Available)
Stock listed above is accurate & shown in real time
Ships by Next Business Day

Product Details

WARNING: Telescope tube rings have to be sized very carefully and perfectly. They only work within an extremely narrow range up to the ring's specified inside diameter. DO NOT PURCHASE rings if your tube is even 1 or 2mm larger than the ring size. They will NOT fit! Measure your own telescope tube very carefully BEFORE purchasing these. Please also do not go off what others may have stated elsewhere online or in our reviews. Manufacturers are known to change specifications between different production runs. Finally, we do not have tube sizes or compatibility information so we will not be able to recommend rings or confirm your choice.

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 elsehwere), 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 six threaded holes - three on the bottom and three on the top - for mounting on most dovetail plates and WO dovetail plate.
  • All six holes are M6 threaded and center-to-center distace between each pair of holes is 15mm
  • Felt-lined to protect even the most delicate telescope finish
  • Very elegant, anodized black version ideal for ZenithStar, GT, and Megrez telescopes, including the new GT81
  • Nice, comfortable, large knobs with teflon paint protection on locking end
  • Rectangular footprint of top and bottom of rings is 20mm wide x 50mm long. Thickness of rings is also 20mm
  • Weight of each individual ring is 15oz / 425g

Other Information

  • Country of Manufacture: Taiwan