I've got lots of sds bits, and for drilling concrete an sds drill is
fantastic.

However for softer masonry, a combi drill is a lighter, one-handed
tool, and most importantly is more compact for difficult corners.

With a bit of messing about to avoid the guides, I can fit an sds bit
in a regular chuck and get it to run concentrically.

Very useful, especially the long series (160mm) bits.

It would be really useful to be able to slip a collet/sleeve over the
base of an sds bit so it fitted properly into a 3-jaw chuck.

Anyone done this or seen one available?