Set of 7 flat and star screwdriver bits in sizes PH1, PH2, PH3, 4X0.5, 7X1.2, PZ1, PZ2, for a 1/4" shank. TOPTUL tools are designed for the most demanding tasks. Precisely selected materials, high manufacturing accuracy, and resistance to deformation and cracking contribute to their great popularity and excellent reputation. Combined with exceptional surface finish and affordable price.