Adjustable wrenches developed according to the scientific ERGO™ process Special adjustable wrenches with extra wide jaw opening Standards: ISO 6787, DIN 3117, ASME B107.8M - 2003 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 Wider opening jaw and shorter handle than a standard wrench Head combines slimness for accessibility with strength for performance Left-handed screw Black finish, precision-hardened and anti-corrosion treated