Covering a range of large-diameter fasteners, this 12-piece hex key set includes six SAE sizes from 3/8 to ¾" (9.5 to 19 mm) and six metric sizes from 8 mm to 19 mm Each key is constructed from chrome vanadium alloy steel with a black oxide finish to provide strength and corrosion resistance during mechanical maintenance. The set also includes a storage case for organized transport and quick tool selection.

Covering a range of large-diameter fasteners, this 12-piece hex key set includes six SAE sizes from 3/8 to ¾" (9.5 to 19 mm) and six metric sizes from 8 mm to 19 mm Each key is constructed from chrome vanadium alloy steel with a black oxide finish to provide strength and corrosion resistance during mechanical maintenance. The set also includes a storage case for organized transport and quick tool selection.