A few weeks ago I put one of these
insert part off tools on my birthday list, and today I tried it in anger. I have the 2mm one on the supplied holder with 10mm spigot (to suit my Myford S7).
I just wanted to say I found it an excellent piece of kit. It parted some 10mm dural and 25mm stainless (303) like a coolish knife through stilton. The cut was clean, accurate and chatter free, and quite unfussed about feed speeds.*
So thanks again Ketan - another useful item at an affordable price!
AS
* I normally find parting works best for me if I push the tool a bit hard - I find being gentle with it usually results in chattering