The Hex Wrench Key is used to replace the pivot screws, tighten the friction screws, and adjust the shield lock down button. It is made especially for Bell shields. Replacement shields can also be installed and removed using the Hex Wrench Key. Using this key considerably decreases the possibility of harming shield inserts by overtorquing pivot kit nuts and screws. When installing tearoffs, the key's straight-edged side is intended for turning and tightening tearoff posts.