Description reviews (2) Original, G.I. - May not fit on all commercial scope bases. Outer diameter of screw head is @ .400". Sold as a pair. 2 Reviews 5 Spfld windage screws Posted by John Marks on Sep 25th 2021 Like I said before, great stuff! 5 Spfld windage screws Posted by John Marks on Sep 9th 2021 Great stuff - recommended