Adjustable wrenches developed according to the scientific ERGO process for maximum comfort with minimum effort, thanks to an ergonomic design. The thermoplastic elastomer handle distributes pressure uniformly in the hand, reducing the risk for work related injuries. It neither feels too warm nor too cold and tolerates oil and grease. A soft, high-friction surface reduces the risk of slipping. The parallel jaws, angled by 15° and with slim design provide a firm grip and good access to objects. The lower jaw will not fall out even at maximum opening. Ultimate strength through alloy steel, forged in single piece, precision hardened and with a chrome finsh to protect against corrosion. Left turning adjusting screw. Meets ISO 6787, DIN 3117, ASME B107.8-2003 and BS 6333.