a Ruger #1 and 77/22? They are blued 30mm "high". They also fit the Mini-14 and 30 Ranch Rifles, what I had them on. They are very nice rings, very slightly used and look brand new and in the package. Midway gets 79.99 for them and I'll ship them for $55. I don't have the Allen wrench for them but a standard Torx bit works perfect.