Set of 6 pieces. A wrench can be used on square shank for extra torque transmission. Handle with trilobular design brings more confort and better toque transmission. Exceed ASME B107.600, ISO 2380-1 & ISO 8764-1 standards. Screwdrivers sizes: PH0 x 2-1/2”, PH1 x 3”, PH2 x 4”, PH3 x 6”, PH4 x 8”, PH2 x 1-3/8”.
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