The high quality screwdriver bits are designed with a flexible torsion zone to absorb torque peaks and reduce the risk of breakage. Applications: wood drilling, metal drilling, screwdriving, and nut setting. The set contains; 4 x hss-g drill bits: 4.5, 5.5, 6, and 7mm. 25mm bits;2 x phillips 25mm bits: ph2 (x2).1 x slotted 25mm bit.