SK 4536 6 Piece 3/8-Inch Drive 1-1/2-Inch, 3-Inch, 4-Inch, 6-Inch, 8-Inch and 10-Inch Extension Set 6-piece 3/8-inch drive extension set stands up to harsh working environments Patented SuperKrome finish for durability and maximum corrosion resistance Improved access to hard-to-reach places Includes 1.5-, 3-, 4-, 6-, 8-, and 10-inch 3/8-inch drive extensions Ball detent feature fastens socket to handle without slippage