These aluminum Riflescope Rings from Vortex fit riflescopes with a 30mm maintube. These rings position the centerline of the scope 0.94" above the top of the mounting rail. They are manufactured from 6061-T6 aluminum, and they're compatible with most Weaver-style mounting systems.
They work well and like intended. Not top quality pieces. But for the price get the job done. I use it for a shotgun that gets used twice a year. Wouldnt put them on something that is used often and needs to be reliable.
Only downfall is i wish they used torx bolts instead of allen. Other than that great for a medium calibre hunting ring.