"Grokman Grokman" wrote in message
...

Why did rotary hammer bits go from hex to SDS?
Seems like change for profit$ sake, but maybe there's a real reason.
Other dickless sages, like the worthless Whoyakidding and his castradi
posse, are of course free to (worthlessly) chime in.

I wonder. My medium duty rotary hammer is SDS, and my heavier one is spline
drive. My dad's eletric jack hammer (heavier still) is hex.