Screw driver bit, comprising longitudinal grooves along shaft for quicker cooling process

摘要

The screwdriver bits (1) are designed with tips (2) of a shape to be used for tightening or loosening screws with complementary shaped slots and a hexagonal shaft (3). The shaft (3) is of a wider diameter than the widest area (4) of the tip (2) and determines the time needed for cooling down after the tool (1) has been molded. The new design of a bit (1) has several grooves (5a, 5b) located along the shaft (3) reducing the amount of the material and the cooling down time normally required.