| 摘要 |
An insert bit (10, 10a, 10b) includes a body (20, 20a, 20b) in a one piece structure extending longitudinally along a phantom axis (L), a first driving tip (23, 23a, 23b) manufactured from a first end of the body (20, 20a, 20b), a second driving tip (24, 24a, 24b) manufactured from a second end of the body (20, 20a, 20b), and a connecting structure (25, 25a, 25b) manufactured from the body (20, 20a, 20b) and extending between the first and second driving tips (23, 23a, 23b, 24, 24a, 24b) and having a hexagonal cross section in which two opposite peripheral edges space from one another with a distance defining a transverse width (WH) which is between 0.26-0.35 times of a longitudinal length of the insert bit (10, 10a, 10b) which defines a first length (L1). |
