This is the type that fits Celestron 8, 9.25, and 11 OTAs. Has a built in focal reducer. Some minor scuffs on barrel, but the optics are perfect. One plastic screw needs replacement on the eyepiece holder. I got this as a package deal, and I do not have the scope to use this with. Comes with Olympus adapter; others are available from Lumicon. $125 shipped in CONUS only.