Screw Bit Torsion
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Quick lock attachment.
Hardiness specifically studied for use with a hammer power driver.
Rust proof protection.
Bits for Impact power drivers.
Quick lock attachment, optimum hold in the chuck.
Torsion geometry for higher strength against the tigthening torque.
PH,PZ,TX perfectly compatible heads.
Empreintes PH, PZ, TX parfaitement compatibles.