Kobalt XTREME ACCESS 7/16-in x 7-1/2-in Metric and SAE Spline Nut Driver

Functional spline design works on both metric and SAE, as well as spline, star, square and most rounded fastener types. Hollow shaft reaches over extended bolts. Handle end accepts 1/4-in drive ratchet for more torque when tightening or loosening a fastener. Handle is overlaid with textured rubber for better grip during use. Shaft is constructed of chrome vanadium steel and heat treated for strength and durability. Meets or exceeds ASME specifications. Hassle-free lifetime guarantee.