Aluminium Alloy Material: Made of anodizing aluminium; precision machined solid aluminum finder shoe base in matte black; for almost all viewfinder holders; for Witty 1 Tangent attachment etc; fits all lens barrel radii
Easy to Install: Two large knurled thumbscrews makes it easy to install; bases feature two large thumbscrew locks to secure finder scope or reflex sight in place; even while wearing gloves; just put it on optical tube and tighten the screws
240 mm focal length: design for astrophotography telescope up to 1500 mm focal length; wide field optics put so potential guide star; an locking thumbscrew holding in place; built in hex screws in holes that tighten two hex screws with hex wrench to lock;
Fits any diameter telescope tube except Schmidt-Cassegrain telescope optical tubes; the base is made of die-cast metal and features a large thumbscrew lock; Includes two M5 screws
Made of high strength Aluminum with Anodizing Aluminium Process; not intended for use on Schmidt-Cassegrain telescope optical tubes