Vessel 146033 2400 Impacta Driver Robust metal cap provides a large area for striking with a hammer Removable bit adapter so a user supplied impact socket can be used 5/16-Inch thick shank bits that are specially hardened for optimum durability Includes one of each bit: +2x36mm, +2x80mm, +3x36mm, +3x80mm, +4x36mm, -10x36mm