Vigor V1999 Multi Profile Socket Wrench Bit, 21 mm, 1/2"

Multi-Profile Socket Wrench Bit With Drive: Square 12.5 mm (1/2 Inch) And Spanner Size S1Xs2: 21 mm Designed And Tested To Reach Studs In Difficult Work Areas Heat Treated For The Correct Balance Of Strength And Hardness