Jim_in_PA said:Ah...that has a heavily reduced diameter. I see what the challenge is for sure. If Snappy happens to make a regular .25" hex version of the long square drive bit it may work, but it will be close.
EDIT: the shaft diameter of the Snappy 6" square drive is .249". Based on the photo above of the DWC Phillips bit, I'm going to guess it may be too large in diameter, but that's strictly a guess. Slimmer than that might also be pushing things with a square drive/Robertson because they do not let go of the bit very easily.
Yes, that's the issue. none of the bits I have found are thinner enough for the DWC18.