Individually tested in a water bath up to 10,000V. Fully certified to EN609000IEC standard for guaranteed electricity safety up to 1,000V/AC and 1,500V DC. Chrome vanadium. Contents, Slotted 2.5x85mm, 4.0x100mm, 5.5x 125mm & 6.5x150mm Phillips,PHOx75mm, PH1x100mm & PH2x100mm