Wheeler Engineering Delta Series Crowfoot Wrench Castle Nut Black. Each wrench is purposely-built with precision to exact fitment allowing you to install handguards muzzle devices and barrels with confidence. Specifications for Wheeler Engineering Delta Series Crowfoot Wrench Castle Nut: Manufacturer: Wheeler Engineering Color: Black Features of Wheeler Engineering Delta Series Castle Nut Crowfoot Wrench Innovative dual-ended wrench design performs multiple functions per wrench? Compatible with xl f.a.t. wrench or any other 1/2'' drive torque wrenches? Professional-grade hardened steel construction withstands extreme use & resists bending? Black oxide finish prevents rust and corrosion while extending the life of the wrench? Package Contents: Wheeler Engineering Delta Series Castle Nut Crowfoot Wrench Wheeler Engineering 1199468: Delta Series Crowfoot Wrench Castle Nut Black