I was going to post this a while back, but forgot. These bits came up in a recent thread and reminded me to post this info.
If you need triple square bits (like Torx bits but with 12 points instead of 6 - also called serrated or 12-point bits) in order to remove things like a flywheel or axle bolts, you can buy K-D bits from your local Napa Auto Parts store (can also buy them on-line).
The Napa part numbers are as follows:
8mm - SER2304 - $4.99
10mm - SER2305 - $5.49
12mm - SER2306 - $5.99
AFAIK, there is no 6mm bit available (part number SER2303, which is the logical part number in the sequence, does not exist).
Whatever you do, do NOT buy the Lisle set of triple square bits that PepBoys sells ($15 for 6, 8, 10 and 12mm). I made the mistake of purchasing this set in order to remove and reinstall my flywheel and axle bolts during a recent timing chain adventure. The teeth on 10mm bit from this set were deformed so badly after torquing just 3 of 10 flywheel bolts that it was completely unusable. I ended up taking the whole set back to PepBoys and demanding my money back. The Napa bit (SER2305) was used to torque the remaining 7 flywheel bolts and all of the axle bolts (they're 10mm on the MKIV cars) and it looked like it had barely been used afterwards.
Modified by VgRt6 at 7:08 AM 3-11-2005