Screwdriver is used with flexible insert whose top fits into bore in screwdriver shaft and whose base fits into recess in screw head

摘要

The screwdriver (1) is used with a flexible insert (15). The top (19) of this fits into a bore in the shaft of the screwdriver and its base (17) fits into the recess (7) in the screw head (5). This reduces wear on the screwdriver when fastening or unfastening screws.