sp,
Bottom line is attrition is the price of doing business with these little guys, at least in my experience! They are very brittle thus "side loads" result in breakage. He sells a pin vice that will chuck the shaft on these bits and it helps a lot. I normally just chuck them in my fat fingers and work with care and use the pin vice for an access enhancer in the tight spots. I would say that, after the hobby knife, they are my most used tool.
Cheers,
Lance