Afraid not. When I wanted the additional piece for the clamp I went to the factory, which is only three miles from where I live, I was told by the manager that it had been out of production for about fifteen years. So I went to a local fabrication company and had one made. I would’nt recommend the Sorby clamp itself. The stem is hexagonal which locks it positively but that limits its position and prevents it being being rotated during use. Its a nuisance having to back off the clamping screw by several turns each time. The other drawback to my modification is that the additional clamp sticking up occasionally gets in the way of your hand and has to be removed. Any make of clamp will work. I was not making a sales pitch for Sheffield products (the home of many good carving products!!) Ashley Isles originated in Sheffield, Henry Taylor and Robert Sorby are still here. Just to say how impressed I am with your video tutorials. I have recently returned to carving as a hobby after a break of about ten years. You are correct in your comment about English carvers traditionally not taught to use carving knives. I was originally taught by Mike Painter who always seemed to be able to help me out of difficult situations using a gouge as large a shovel.