| 摘要 |
<p>A screwdriver includes a grip 1 with at least one snap piece 15, a connection member 2 with a protrusion 23, an adjustment member 3 with at least one rib 31 and a bit 6. The grip has a recessed area 10 with engaging groove 11 and a room 12 communicates with the recessed area. A round passage 13 is defined in the grip and in communication between the room and a space 14 in which the connection member is received. A securing member 4 is received in the room and has a polygonal securing hole 40. A cover 5 is engaged with the recessed area of the grip. The bit has a metal shank 60 which has a round insertion section 66 which is inserted into the round passage of the grip and has a polygonal securing section 67 which is engaged with the polygonal securing hole of the securing member. The bit is secured to the grip and able to be easily replaced. The bit, except the work end 61, is coated in an isolation material 63.</p> |
