Excellent, as an aircraft mechanic I used to have to use EZ grip or something similar to increase grip for stuck screws. However with the diamond grit added I don't have to worry about it anymore. I used to use Snap on ACR bits but these are far superior at a better price. As a bonus the gold color and red sizing band make them easier to find in the event of a lost tool (FOD prevention). Overall I can't recommend highly enough.

I ordered a set of these in #1, #2, and #3. The #2 and #3 both have the red easy identification size band on them but the #1 came with the plain green band that simply says Wera. When I searched for this part number at Wera's site it showed the green band so I'm guessing the photo here is incorrect.

Regardless of the ID band I've found that I can't tell the difference between these Wera bits and the straight BiTorsion without the diamond coating. In fact the only way I knew these were BiTorsion Diamond Coated was the BDC stamped on the base. The diamond coating isn't nearly and pronounced as in the photos.

I'm giving them 4 starts because they still work great but after trying them on several types of screw (even wet ones) I can't tell any difference in "bite" then my other Wera bits.

Actual bit dimensions differed from photo rendering.

The bits that come with the Wera Kompakt 27 are pretty good, but these are far better. More grip and no distortion of the bit or screw head. Combining this bit and others of the same series with that driver, I have a no-compromise multi-bit driver for my tool bag.

These bits are of high quality and will outlast your usual bits that you get from the store.