We are only able to supply 01 and PMV11 in 1/4, 3/8, 1/2, 3/4 and 1 inch at present I have not heard of any new sizes coming any time soon. The PMV11 Butt chisels are going to be available in 1/4, 1/2, 3/4, 1, 1-1,2 and 2 inch, we are not sure if we will be stocking these new additions yet.
I have been playing with a 1 inch PMV11 for a couple of months and am now happy to say that it does achieve and hold a very keen edge indeed.