These 6"(152 mm), felt-lined mounting rings are made out of solid aluminum, black anodized, and will fit most 150 to 154 mm OD tubes. A worthwhile investment if you want the best out of your mount and telescope.

Features

• Very elegant, anodized black version . 
• Three holes on top to fit additional accessories.
• Flannel-lined to protect even the most delicate telescope finish.
• Nice, comfortable knobs with teflon paint protection on locking end.
• These solid rings will keep your telescope always in perfect alignment.  

A telescopeis only as performing as the mount and rings it comes with: saving on rings is not always a wise choice!