Adjustable wrenches developed according to the scientific ERGO™ process Standards: ISO 6787, DIN 3117, ASME B107.8M - 1996 and BS 6333 High performance alloy steel Comfortable non slip thermoplastic grip handle Scale in mm for pre adjusting and accurate measurement The jaw does not fall out even at maximum opening of the wrench Head angle 15º provides better accessibility Left-handed screw P series: Reversible jaw for pipe use Black finish. Precision hardened and anti-corrosion treated