Telrad Finder Astromania Universal Quick Release Finder Shoe Base For Schmidt Cassegrains And Other Telescope 130-400mm Diameter - For MQR III&IV/Witty One And V-Bracket - Black Shoe Finder Bosttch Roofng Naler Parts Dagram | Revewmotors.co Please be sure to measure your hole spacing range is 27-45mm to ensure this will fit. Astromania Schmidt-Cassegrain Finder Scope Base - Attach standard finder scope,Laser Pointer bracket or reflex sight bracket - The clamp in the bottom of dovetail base fits standard Vixen dovetail bar The base can be used on telescope that do not themselves have a base,or be used in other different position on the telescope as a additional base. Multifunctional tool can be transformed into a sophisticated telescope viewfinder; making it an ideal companion for enhancing your stargazing experience with various accessories and taking it to the next level Multi-Function: There are two elongated holes on this base and a single countersunk hole for screws up to M5 in the middle; two screws are on the side of base; the distance between the center points of the screw holes is 24 to 41 mm The laser pointer holder is compatible with various sizes; accommodating a maximum diameter of 30mm and a minimum of 5mm;The inclusion of a 1/4-inch standard camera thread hole makes it compatible with most telescopes; including Celestron Sky-watcher Vixen and other models Oron's dual fnder scope mountng bracket receves glowng revews...