-20AN Combination Wrench

This Wrench is a must for the safe, damage free assembly and maintenance of your cooling system. One wrench will fit both the S & B hex of the hose end. One end of the wrench, S= Socket Nut, is needed when assembling the hose end to hose. The other end B= AN Hex Nut, is needed when tightening or removing hose assembly's to Autoplumb Water Neck Adapters. 1 wrench is highly recommend to prevent damage. You may want a second wrench that can be used to stabilize the Adapter and prevent disturbing the seal of the Adapter when tightening or loosening the hose end to it. A large adjustable wrench can be substituted to hold the Adapter Uses: For the assembly of -20an Hose Ends For the installation of the Water Neck Conversion Adaptor For the tightening of the Water Neck Adaptor to the Hose End Use during any maintenance of your cooling system.