Ergonomic quad-lobe handle design with 360° texture for additional grip. Designed to meet demanding heavy-duty needs of industrial maintenance and assembly applications. Screwdrivers meet ASME B107.15 standards. Impact and chemical resistant handles are four-sided with broad but shallow flutes. Fully grounded and chemically polished, then chrome plated for corrosion resistance. Made of high-alloy steel (same as shank).