Alltrade 640842 3 Piece 1/4-Inch Drive Extension Bar Set. Includes 2”, 3” & 6” extensions. Mirror polished chrome vanadium shafts with knurled center and dual grease rings on female end. Meets or exceeds ANSI standards. Features:Chrome Vanadium ConstructionKnurled Center Section What's in the Box:Alltrade 640842 3 Piece 1/4 Inch Drive Socket Extension Set