Die cut, this set includes: one amber plastic insert, one wide post insert, one narrow post insert, one bead, and four diameters of aperture. Seven inserts are made of blued steel. Made by Lyman, these inserts fit #FS-17 sights, the similar discontinued Thompson Center globe sight, and similar modern target rifle sights that accept insert
Sight slot blank to fill empty dovetail slots and protect the edges from damage. Size - 3/8" wide by 3/32" deep blued steel.