Tri-lobe handles for comfort and effective delivery of torque. Electro Statically Dissipative to protect sensitive electronic components. Blades manufactured from premium quality chrome vanadium/molybdenum steel for strength. Tips accurately machined for the ultimate screw fit. Set contains slotted 5×250, PH1x300, PH2x3, TX08x200, TX10x300, TX15x300.