... work on Screw of PH#0, 1, 2, 3, 4 and PZ#0, 1, 2, 3, 4... Type: Precision Scr ... Features:S2 through hardened, chrome-plated tipHand with triangular structure and torsion has increased by 30% or moreTwo-way ratchet function ... adjusting electrical components suitable for working in clean roomsAnti-static and magnetic handle and bladeRotating cap for easy workingResistant to mechanical wearThermal shock ...