Draper Stud Extractor, 12mm

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1/2" Stud Extractor Sockets Roller type with 1/2" square drive or 21mm hexagon on end of socket. Unscrews both left and right hand threads. Manufactured from chrome vanadium steel hardened, tempered and chrome plated for corrosion protection. Spare extractors are available separately. Packed in metal case in display sleeve., Weight: 0.3968320716 pounds, Manufacturer: Draper

Electrical World

Roller type with 1/2" square drive or 21mm hexagon on end of socket. Unscrews both left and right hand threads. Manufactured from chrome vanadium steel hardened, tempered and chrome plated for corrosion protection. Spare extractors are available separately. Packed in metal case in display sleeve.4 x socket: 6, 8, 10, 12mm