Adjustable wrenches developed according to the scientific ERGO™ process.Maximum comfort with minimum effort thanks to ergonomic design.Jaw will not fall out even at maximum opening of the wrench.Head combines slim design for accessibility with strength for performance.Laser scale in mm for pre-adjusting and accurate measurement.Skydrol- and oil-resistant rubber handle.Ergonomically designed thermoplastic elastomer handle distributes pressure uniformly in the hand, reducing the risk for work related injuries.High-performance alloy steel forged in single piece.Chrome plated, precision-hardened and anti-corrosion treated.Left turning screw.Standards: ISO 6787, DIN 3117, ASME B107.8 and BS 6333