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This screwdriver is manufactured with a chrome vanadium steel blade which is hardened, tempered & chemically blackened. It has a fully insulated handle & blade sheath for total safety when working. It is tested to 10kV & are suitable for working on live circuits of 1kV AC & 1.5kV DC. It conforms to EN60900 (VDE 0682-201):2013-04; EN60900:2012. Product SKU ST-HD-SD452 x 1