- BiTorsion bits for TORX socket screws with a torsion zone into which kinetic energy is dissipated during peak loads. This significantly increases the product life. Best possible service life with the matching holder. Tough, for universal use. 1/4" hexagonal, suitable for holding tools as per DIN ISO 1173-D 6.3. * WER30789C: TX20/25mm * WER30789D: TX25/25mm
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