1/4 Drive 6" Long Bit Socket Hex 4mm

[This review was collected as part of a promotion.] Wiha tools always deliver the expected top-notch quality. These socket-drive bits are no exception.

These are great 1/4" drive long reach hex bit sockets. They are the longest ones I've found, and have well-cut ends for a snug fit, instead of the ball ends which tend to round out the screws over time. I've only had two issues: 1. These use set screws to hold the bit in the socket - I've had one set screw work itself free in my tool bag, but a dab of blue Loc-tite on the threads and on the bit shaft itself has resolved that issue. 2. The size stamped on the shaft tends to run a little on the small side, which makes confirming the size difficult in poor lighting.