The BugNut wrench is proprietary to the BugNut barrel nut, and will work with standard size BugNut barrel nuts (for R700, Savage, customs, etc). This wrench is NOT for use with the standard Tikka/ Ruger American BugNut

It is a two piece wrench, and can be assembled over the nut to eliminate scrathing of the barrel. Has 1/2" square cutout for ratcheting wrench, torque wrench, or breaker bar.