Screw extractor with coarse flutes
Made of chrome vanadium steel. The sharp edges of the flutes dig into the drilled screw and allow it to be unscrewed. With square drive for use with tap wrench etc.
For extraction of broken off screws with right-hand thread (pre-drill the hole ⌀ as listed in the table; turn the screw extractor anti-clockwise).
Aluminium, brass, stainless steel.
UNC and UNF threads available on request.