The mounting bar has two M6 through-holes on both sides for easy adaption to rings
Three threaded through-holes: the center hole has ¼"-20 threads and the two larger holes on either side of center have M8 x 125 threads
Synta-style dovetail bar - Accepts all sights designed to fit a standard Picatinny rail Fits into standard finder shoes by Skywatcher GSO Celestron Vixen Orion
Fits the dovetail mounting base on most telescopes
Machined of high quality aluminum and anodized black durable for long time use