Neiko 03323A Crowfoot Wrench Set 3/8-Inch and 1/2-Inch Drive, SAE, 12 Piece Set | Includes Sizes: 5/16&rdquo;-1 PRO QUALITY: Set includes 12 professional quality 1/2" and 3/8 shank crowfoot flare nut wrenches ranging in size from 5/16 to 1 HEAVY DUTY: Made of industrial grade heat-treated drop forged chrome molybdenum that wont break PERFECT FOR MECHANICS Ideal for diesel and auto maintenance, set can be used with any  and 3/8 drive ratchet, extension or torque wrench CONVENIENT SIZES: Set includes 5/16, 3/8, 7/16, , 9/16, 5/8, 11/16 and , 13/16, 7/8, 15/16, and 1 sizes INCLUDES HARD CASE: Includes hard plastic case for convenient storage and all sizes are clearly marked on each wrench