Kobalt 7-pcs Metric and standard (SAE) Spline Nut Driver Set

Sizes included in the set are 4.5 mm and 3/16-in, 6 mm and 1/4-in, 8 mm and 5/16-in, 9 mm and 11/32-in, 10 mm and 3/8-in, 11 mm and 7/16-in, 13 mm and 1/2-in Works on both metric and SAE, as well as spline, star, square and most rounded fastener types Hollow shaft reaches over extended bolts