hi,
they look a tad smaller, but it is a question i want answered too...so once the
days chores are done and i can get into the shed, we'll both have our answer !

if they do fit, then why this one didn't catch on? 

my guess is the absence of the free-spinning collar at the bit end of the spiral
shaft made this particular model a bit awkward  to use. odd, as the earlier
model, based on the same patent had it ....

Cheers,
Mal

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> On 25 Oct 2014, at 0:57, John Ruth  wrote:
> 
> Malcolm,
>  
> Does the H. Mueller spiral tool accept standard bitstock tools, or are those
smaller than what would be used with a common brace?
>  
> If they are standard, I am surprised that the tool never "caught on", as it
seems just about ideal for use with a countersink or a bitstock-headed twist
drill.
>  
> Then again, for all I know, H. Mueller tools might be common in Australia.
>  
> John Ruth