Draper 16770 Wobble Extension Bar Set 1/2" Sq. Dr. Micro Satin Chrome 4 Piece

With wobble end, manufactured from chrome vanadium steel hardened and tempered with a micro satin finish. Each ext. bar has a knurled ring for extra grip. Machined wobble end allows socket to be driven at up to 15° to the vertical. Attached with a spring - loaded ball bearing for secure socket holding.