Makita B-43315 Hollow Socket, 9/16 x 12-Inch Streamlines Overhead Fastening Applications 12 point socket provides easy fitment over 6 and 12-point fasteners Additional socket length provides better accessibility to nuts in hard to reach places Axial press-fit 1/4" hex shank provides greater durability and torsional strength compared to a one-piece hollow socket Smooth, chamfered inner well prevents shaft from biting and ruining threads for easy fastening and unfastening