The wera bit safe 61 bi torsion 1 is a comprehensive set of torsion bits and a rapidaptor holder set supplied in a pouch it is designed for users on the move needing a broad selection of drive profiles with multiples of the same bit utilising a unique combination of special material hardening and precision manufacture bi torsion bits are designed to prevent premature wear and dramatically extend service life their patented torsion zone absorbs peak stress loads that normally destroy bits diamond