Wera 05051461001 816 ra kraftform kompakt ratchet screwdriver wera 05051461001 this ratchet screwdriver from wera has a multi component non roll kraftform handle and is suitable for use with all 6 3mm 1 4in hexagonal bits this screwdriver incorporates the rapidator system for swift and easy bit changing br ratchet fine serration for lower drive back angle changeover ring right fixed left 6 3 mm 1 4 inner hexagonal holder with rapidaptor technology with rapid in rapid out