Features
Klein Tools' Flip Quad Socket Adapter is a must have for all tradesmen. The 1/2-Inch to 3/8 -Inch square adapter is designed for use with the Klein Tools' Flip Quad Socket (Cat. No. 66009). Ball detent to help keep the adapter connected to the socket when in use on the jobsite.

Klein Tools is the result of one of those “happy accidents” that turn out to be revolutionary. Klein Tools famously got their start in 1857 when a linesman came to founder Matthias Klein to repair his broken pliers. Klein replaced the broken half and when the old half of the tool broke too, Klein forged a replacement for that, thus making the first Klein Linesman pliers. Since these humble beginnings, Klein Tools has grown and become one of the largest American made toolmakers and they’re a brand used by tradesmen, linesman and electricians all across America.