The U-BITS are specifically designed to fit snugly and firmly on the Tight Star Recess of the U2 fasteners screw assortment. However, U2 fasteners also fit the traditional star drive. The U-BITS are Tip-Hard chrome plated. Top coating-electrostatic powder spray coating. They are also impact driver-ready: made of high carbon tool steel with added Vanadium and Molybdenum to prevent wear and tear.
 
This specific bit is the T-40, with a 2-inch length, crafted to be used with the U2 3/8" Construction Screw (variants of the 3/8" screw include 8", 7", and 6"). 
 
Sold individually.