The 19mm Draper Extra Long Hexagon Allen Key represents the largest size in this professional range, designed for the most substantial industrial fastening applications. This heavy-duty size is typically encountered in major construction equipment, large-scale plant machinery, heavy vehicle assemblies, and industrial structural installations where maximum fastening strength and torque capacity are paramount. Manufactured from hardened and tempered chrome vanadium steel, this key provides outstanding strength and torsional rigidity for the most extreme torque requirements. The chemically blacked protective finish ensures comprehensive corrosion resistance even in harsh site and workshop conditions, whilst chamfered ends enable swift socket head location. The extra-long design delivers exceptional reach into deep recesses and provides substantial mechanical advantage for managing the largest and most heavily torqued fasteners with professional confidence. Features and Benefits:19mm si