13 Pc. Flexible Combination Ratcheting Wrench Sets, Inch no checkout as well as in line air as well as in line air lubricators Prevents rust formation while providing positive lubrication for smooth starting and longer tool life Assures maximum performance by dissolving gum and sludge that cut down tool speed and reduce power output non metallic or composite material Cutting rods can sustain the burn with and without constant electrical power once ignited One piece patented construction maintains the balance necessary to sustain the exothermic reaction Specially designed flux coated cutting rod Flexible head Knurled side beam for ratcheting direction indicator 72 teeth ratcheting box end needs as little as 5° to move fasteners versus 30° for standard box end wrenches Surface Drive® on box end provides off corner loading for better grip and reduced fastener rounding