1/2” Dr Deep Spline Impact Socket Bit Option:

Cr-Mo 1/2” Dr 75mmL Spline Impact Socket Bits Individual: M4-5-6-8-9-10-12-14-16-20. With groove and hole for retaining ball. Black phosphate finish for protection. Multi-variation list with following size options: M4-5-6-8-9-10-11-12-13-14-15-16-17-18-20.