"Grunff" wrote in message
...

My first SDS (a £35 NuTool, which lasted only a little longer than the
chuck) came with a free SDS chuck. Not thinking things through, I
proceeded to use it to drive a 7mm ordinary masonry bit through a stone
wall.

The drill bit very quickly gained the appearance of a sharpened pencil,
and the chuck was never the same again (I couldn't actually undo the
chuck!).

experiences certainly vary with the NuTool
got mine from Woolies with the 5 year gntee
& it's drilled 16mm holes with the add-on
chuck, chased trenches in concrete, hacked through
granite & it's still going fine - for £27 & five years of gntee
.....not bad.