Vandoren Optimum Pressure Plates Alto

This was a replacement part as I had lost 2 of the plates for my Alto ligature.
I recently bought a new mouthpiece, and wanted to try out the variations that the Optimum lig can offer. These arrived very quickly in the UK - well done Thomann.
Not the most exciting of products, but this is the only place I could find them and they are exactly as advertised.
The plates are well crafted, I cannot see any defects at all and functions exactly as hoped.