VERSATILE DESIGN - Quick change screwdriver contains two double-ended bits for use with slotted and Phillips fasteners. The shank can be used as a 1/4 or 5/16 nut driver.QUICK CHANGE BITS - Easily change bits to the size needed, reducing time wasted looking for the proper size screwdriver. Bits are double sided, \#1 & \#2 Phillips and 3/16" & 5/16" slotted.DURABLE CONSTRUCTION - Alloy steel construction provides a long service life in demanding shop environments.MADE IN THE U.S.A.