Bit-Safe 61 BiTorsion 1Product Description: Wera Bit Safe 61 BiTorsion 1 comprehensive torsion bits and Rapidaptor holder set in pouch 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. The patented Torsion zone absorbs peak stress loads