Tool bit e.g. T-type tool bit, for use with power tool, has extension extended from end of fin to connecting end and formed with circular cross section, and reinforcing sections extended in circumferential direction of extension

摘要

The bit (1) has a recess (12) including a curved periphery (121) interconnecting two reinforcing sections (113) of two fins (11). Each fin defines first length for defining distance from a first end of the fin to the curved periphery. The first length is less than second length defining distance between two opposite peripheral sides of hexagonal periphery of a connecting end (102). An extension (14) is extended from a second end of the fin to the connecting end and formed with a circular cross section. The reinforcing sections are extended in circumferential direction of the extension.