BONDHUS HEX END L-WRENCH 4.0MM PROGUARD SINGLE BONDHUS BON BH15960Hex End L Wrench 4. 0mm PROGUARD More than just another L Wrench Bondhus is committed to making the best tools on the market. Bondhus is constantly working to improve our tools. We are never satisfied with good enough. We work hard to make sure your new Bondhus L Wrench is always the best tool for the job. Chamfered tool tips eliminate burrs and help tools seat in screw head Sharp corners transfer more torque to the screw and reduce stripping