Includes two post-type inserts, (.050 and .100 wide)
One bead insert (.062)
Five aperture-type inserts, (one plastic insert with .120 Hole and four steel inserts with .093, .102, .110 and .120 holes)
The Lyman Sight Insert Set for Series 17A includes two post inserts, five aperture inserts and one bead insert. It has blued steel and 3/8" dovetail. Height is from bottom of dovetail to center of aperture.