Kobalt Universal Metric 1/4-in Drive Spline 5.5mm Deep Socket

Dedicated metric spline drive broach. Specialized socket design allows work on multiple fastener types including 6-point, 12-point, square, star, spline, and most rounded. Constructed of chrome vanadium steel and heat treated for strength and durability. Natural surface grind with a matte black finish that allows you to easily identify the tools in your tool box. Size callout is laser etched. Meets or exceeds ASME specifications. Hassle-free lifetime guarantee.