zlacker

>>gnabgi+(OP)
I think this is misunderstood - everybody points out that how evil BMW is for trying to be proprietary, then immediately points out any Chinese factory can produce a compatible tool for pennies - which one is it?

I think this is a pretty good mechanical design in general because:

- large contact surface (like hex or torx)

- no chance of slide-out (like flathead) or torque-out (like Philips)

- you can use a different size screw bit than the screw, and it wont slide around, or destroy your nut like torx does with hex

>>torgin+1M
It seems to me it would be terrible mechanically because the driver has 2 very weak little lobes sticking out.