I've dealt with Duro for years as I'm in construction.
They absolutely walk all over any other brand for construction materials in a disc cutter.
I've been with the sales manager of Duro today - hence the "ahem" new blade
and have every faith in this.
Incidentally, all Duro blades are rigorously tested and fully compliant for sideway forces and are sintered differently to most other blades.
Can you tell I've sold them for a while hehee??
I got my 10mm Rubi wheel as well from EMC.