The newfangled generation of Screw Extractors, Tapered flute design Made of high-strength steel -LRB- plate vanadium -RRB- for greater resistance to breaking and rounding out For unscrewing ruined screws and bolts without harmful threads Can be in dextrorotatory or left-handed direction -LRB- for right-and left-handed threads -RRB- 100 % Made in Germany by Rennsteig .