The U-BITS are specifically designed to fit snug and firm on the Tight Star Recess of teh U2 fasteners screw assortment.  However, U2 fasteners also fit the traditional star drive. U-Bits are impact driver ready and are made of hardened steel to prevent wear and tear.  Sold individually.

U-BIT, T-30, 2" length

SKU: B00230020W