CRAFTSMAN 3/8" Extension Set, 4-Piece (CMMT43282) 4-piece 3/8-inch Drive Extension Bar set gives you the flexibility to get the job done easier and quicker. With the help of the extension bars reach, the 3/8 extension set will give you access around obstructions to be able to get the job done with ease. Features CORROSION RESISTANCE: Socket with full polish chrome finish INCREASED ACCESSIBILITY AND MAXIMUM PERFORMANCE: Socket extension set includes various extensions QUICK SIZE IDENTIFICATION: 3/8 extension set comes with large markings Meets or Exceeds ASME Specifications USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.