From Midway's description:
This tool is designed to remove, install and adjust front and rear dovetail sights. This tool can be used by hand, or it can be in a bench vise for sights that are extra tight. Tool comes with 2 sight tips: 1/4" Round and 1/4" Square. Steel and polymer construction.
http://www.midwayusa.com/eproductpage.e ... t=11082005
The 1/4 square sight tip has the derilin coating dinged up a little bit from use but does not impair function at all. My guns all have the sights I want so I don't need it for another 30 years or so as long as I don't buy any more...