Simon Avery wrote:
"BillR" wrote:

Hello BillR

B| It implies they don't need a pilot hole. i.e. they have very
B| aggressive thread and sharp tip e.g. like the SF TurboGold

The sort that end up sticking into your finger when you rummage around
in your toolbox?

yup, bloddy sharp they are, could use 'em as darts