AlNiCo 5 Magnet .75 in 19.2mmx1.0 in 25.5mmx1.63in 41.33mm 1022 F cube block precision ground on 1.63in sides.

N to S is between the 11.63in 41.33mm length.

They are relatively strong but could be strengthened with a magnetizer.

Some minor chips on edge and corners...