The Draper 1/2" Drive 12mm Stud Extractor represents the largest size in this professional extraction set, designed specifically for heavy-duty applications involving substantial damaged studs and bolts. This 12mm extractor is essential for larger engine components, transmission assemblies and industrial machinery where robust fasteners have become seized, corroded or stripped through prolonged service or extreme operating conditions. The roller-type construction delivers maximum grip and extraction force on both left and right hand threads, making light work of even the most challenging removal tasks. Featuring the versatile combination of 1/2" square drive and 21mm hexagon on the socket end, this extractor allows you to apply significant torque using professional-grade ratchets or spanners as workspace permits. Precision-manufactured from high-quality chrome vanadium steel and subjected to comprehensive hardening and tempering processes, it provides the exceptional strength required